1. ALGEBRA I and GEOMETRY VOCABULARY

2. KEY a = apothem = slant height A = area P = perimeter of base b = base
Pi = 𝜋 = 𝑜𝑟 22/7
B = area of base
r = radius
C = circumference
S.A. = surface area
C = 𝝅d or C = 2𝝅r
V = volume
d = diameter
w = width
h = height

3. CONVERSIONS 1 FOOT = 12 INCHES YARD = 3 FEET 1 MILE = 1,760 YARDS
1 MILE = 5,280 FEET
1 ACRE = 43,560 SQUARE FEET

4. CONVERSIONS
1 METER = 100 CENTIMETERS 1 METER = 1000 MILLIMETERS 1 KILOMETER = 1000 METERS 1 LITER = 1000 MILLILITERS 1 LITER = 1000 CUBIC CENTIMETERS 1 GRAM = 1000 MILLIGRAMS 1 KILOGRAM = 1000 GRAMS

5. CONVERSIONS CUP = 8 FLUID OUNCES 1 PINT = 2 CUPS QUART = 2 PINTS
1 GALLON = 4 QUARTS
1 POUND = 16 OUNCES
1 TON = 2,000 POUNDS

6. A

7. AN ANGLE THAT HAS A MEASURE BETWEEN 0 DEGREES and 90 DEGREES.
ACUTE ANGLE
AN ANGLE THAT HAS A MEASURE BETWEEN 0 DEGREES and 90 DEGREES.

8. ADDITIVE IDENTITY
THE NUMBER ZERO ( 0 ). WHEN ZERO ( 0 ) IS ADDED TO ANOTHER NUMBER, THE SUM IS THE NUMBER ITSELF = 3

9. ADDITIVE INVERSE PROPERTY
A NUMBER AND ITS
ADDITIVE INVERSE HAVE
A SUM OF ZERO ( 0 )
= 0
3 and ARE INVERSES
OF EACH OTHER

10. ALTITUDE
THE PERPENDICULAR DISTANCE FROM A VERTEX IN A POLYGON TO ITS OPPOSITE SIDE.

11. ANGLE
TWO RAYS EXTENDING FROM A COMMON ENDPOINT CALED THE VERTEX In this illustration the vertex is B

12. ANGLE of DEPRESSION
AN ANGLE DEFINED BY A HORIZONTAL RAY AND A RAY EXTENDING FROM THE COMMON ENDPOINT TO A POINT BELOW THE HORIZONTAL RAY

13. ANGLE OF ELEVATION
AN ANGLE DEFINED BY A HORIZONTAL RAY AND A RAY EXTENDING FROM THE COMMON ENDPOINT TO A POINT ABOVE THE HORIZONTAL RAY

14. APOTHEM
THE PERPENDICULAR DISTANCE FROM THE CENTER OF A REGULAR POLYGON TO THE MIDPOINT OF ANY OF ITS SIDES

15. ARC
A CONTINUOUS PART OF A CIRCLE. THE MEASURE OF AN ARC IS THE MEASURE OF THE ANGLE FORMED BY TWO RADII WITH ENDPOINTS AT THE ENDPOINTS OF THE ARC

16. AREA
THE MEASURE, IN SQUARE UNITS, OF THE INTERIOR REGION OF A CLOSED TWO-DIMENTIONAL FIGURE

17. ASSOCIATIVE PROPERTY
THE WAY IN WHICH THREE OR MORE NUMBERS ARE GROUPED FOR ADDITION OR MULTIPLICATION DOES NOT CHANGE THEIR SUM OR PRODUCT

18. AXIOM
POSTULATE A MATHEMATICAL STATEMENT ACCEPTED AS TRUE WITHOUT PROOF IS CALLED AN AXIOM

19. B

20. BASE
THE SEGMENT OR FACE OF A GEOMETRIC FIGURE THAT IS PERPENDICULAR TO THE HEIGHT

21. THE NUMBER OR VARIABLE THAT UNDERGOES REPEATED MULTIPLICATION.
BASE OF A POWER
THE NUMBER OR VARIABLE THAT UNDERGOES REPEATED MULTIPLICATION.

22. A POLYNOMIAL WITH TWO TERMS IN 2X + 5 THE TERMS ARE 2X AND 5 BI = TWO
BINOMIAL
A POLYNOMIAL WITH TWO TERMS IN 2X + 5 THE TERMS ARE 2X AND 5 BI = TWO

23. TO DIVIDE INTO TWO CONGRUENT PARTS
BISECT
TO DIVIDE INTO TWO CONGRUENT PARTS

24. BREAK
A ZIGZAG ON THE X- OR Y- AXIS IN A LINE OR BAR GRAPH INDICATING THAT THE DATA BEING DISPLAYED DO NOT INCLUDE ALL OF THE VALUES THAT EXIST ON THE NUMBER LINE USED. ALSO CALLED A SQUIGGLE

25. C

26. CENTER OF DILATION
THE INTERSECTION OF THE LINES THAT CONNECT EACH POINT OF A FIGURE WITH THE CORRESPONDING POINT OF THE SIMILAR FIGURE

27. CENTRAL ANGLE
AN ANGLE THAT HAS ITS VERTEX AT THE CENTER OF A CIRCLE AND WITH RADII AS ITS SIDES X X

28. THE POINT OF CONCURRENCY OF THE THREE MEDIANS OF A TRIANGLE
CENTROID
THE POINT OF CONCURRENCY OF THE THREE MEDIANS OF A TRIANGLE

29. A LINE SEGMENT WITH ENDPOINTS ON THE CIRCLE
CHORD
A LINE SEGMENT WITH ENDPOINTS ON THE CIRCLE

30. CIRCLE AREA

31. CIRCUMCENTER OF A TRIANGLE
THE POINT OF CONCURRENCY OF THREE PERPENDICULAR BISECTORS OF A TRIANGLE

32. THE DISTANCE AROUND A CIRCLE
CIRCUMFERENCE
THE DISTANCE AROUND A CIRCLE

33. CIRCUMSCRIBED
A DESCRIPTOR FOR A GEOMETRIC FIGURE THAT IS DRAWN AROUND AND ENCLOSES ANOTHER GEOMETRIC FIGURE ( POINTS ARE TOUCHING )

34. CLOSED FIGURE
A TWO DIMENTIONAL FIGURE THAT DIVIDES THE PLANE INTO TWO PARTS THE PART INSIDE AND THE PART OUTSIDE

35. COEFFICIENT
THE NUMBER THAT MULTIPLIES THE VARIABLE IN AN ALGEBRAIC EXPRESSION IF NO NUMBER IS SPECIFIED THEN THE COEFFICIENT IS 1

36. COMMUTATIVE PROPERTY
THE ORDER IN WHICH TWO NUMBERS ARE ADDED OR MULTIPLIED DOES NOT CHANGE THEIR SUM OR PRODUCT

37. COMPLEMENT OF SET A
DENOTED BY A’ OR A THE SET OF ALL ELEMENTS IN THE UNIVERSAL SET THAT ARE NOT IN A

38. TWO ANGLES IN WHICH THE MEASURES HAVE THE SUM OF EXACTLY 90 DEGREES
COMPLEMENTARY ANGLES
TWO ANGLES IN WHICH THE MEASURES HAVE THE SUM OF EXACTLY 90 DEGREES

39. COMPOUND INEQUALITY
TWO INEQUALITIES THAT ARE COMBINED INTO ONE STATEMENT BY THE WORDS AND OR OR

40. CONCAVE POLYGON
A POLYGON WITH ONE OR MORE DIAGONALS THAT HAVE POINTS OUTSIDE THE POLYGON

41. TWO OR MORE COPLANAR CIRCLES THAT SHARE THE SAME CENTER
CONCENTRIC CIRCLES
TWO OR MORE COPLANAR CIRCLES THAT SHARE THE SAME CENTER

42. THE “THEN” PART OF A CONDITIONAL STATEMENT “IF” … “THEN”
CONCLUSION
THE “THEN” PART OF A CONDITIONAL STATEMENT “IF” … “THEN”

43. CONDITIONAL STATEMENT
A LOGICAL STATEMENT CONSISTING OF TWO PARTS, A HYPOTHESIS AND A CONCLUSION

44. HAVING THE EXACT SIZE AND SHAPE
CONGRUENT
HAVING THE EXACT SIZE AND SHAPE

45. AN UNPROVEN STATEMENT BASED ON OBSERVATION
CONJECTURE
AN UNPROVEN STATEMENT BASED ON OBSERVATION

46. CONTRAPOSITIVE
THE STATEMENT FORMED BY NEGATING AND REVERSING THE HYPOTHESIS AND CONCLUSION OF A CONDITIONAL STATEMENT

47. CONVERSE
THE STATEMENT FORMED BY REVERSING THE HYPOTHESIS AND CONCLUSION OF A CONDITIONAL STATEMENT

48. CONVEX POLYGON
A POLYGON WITH EACH INTERIOR ANGLE MEASURING LESS THAN 180 DEGREES ALL DIAGONALS OF A CONVEX POLYGON LIE INSIDE THE POLYGON

49. COORDINATE GRID
A TWO-DIMENTIONAL NETWORK OF HORIZONTAL AND VERTICAL LINES THAT ARE PARALLEL AND EVENLY SPACED; ESPECIALLY DESIGNED FOR LOCATING POINTS, DISPLAYING DATA, DRAWING MAPS

50. COORDINATES
NUMBERS THAT CORRESPOND TO POINTS ON A COORDINATE PLANE IN THE FORM ( X,Y ) OR A NUMBER THAT CORRESPONDS TO A POINT ON A NUMBER LINE

51. COSINE ( COS )
IN A RIGHT TRIANGLE THE RATIO OF THE LENGTH OF THE LEG ADJACENT TO THE REFERENCE ANGLE TO THE LENGTH OF THE HYPOTENUSE

52. CROSS PRODUCT OF SETS A = ( 1, 2 ) B = ( X, Y, Z ) Then
THE SETS OF ALL PAIRS WHEREIN THE FIRST ELEMENT IS A MEMBER OF SET A AND THE SECOND OF SET B
A = ( 1, 2 )
B = ( X, Y, Z )
Then
A x B = (1,X), (1,Y), (1,Z),
(2,X), (2,Y), (2,Z)

53. A SOLID FIGURE WITH SIX CONGRUENT SQUARE FACES
CUBE
A SOLID FIGURE WITH SIX CONGRUENT SQUARE FACES

54. D

55. THE SUM OF THE EXPONENTS OF THE VARIABLES IN A MONOMIAL
DEGREE OF MONOMIAL
THE SUM OF THE EXPONENTS OF THE VARIABLES IN A MONOMIAL

56. THE GREATEST DEGREE OF THE MONOMIALS IN A POLYNOMIAL
DEGREE OF A POLYNOMIAL
THE GREATEST DEGREE OF THE MONOMIALS IN A POLYNOMIAL

57. THE OUTPUT OF A FUNCTION
DEPENDENT VARIABLE
THE OUTPUT OF A FUNCTION

58. DIAMETER
A LINE SEGMENT FROM ANY POINT ON A CIRCLE OR SPHERE PASSING THROUGH THE CENTER TO ANOTHER POINT ON THE CIRCLE OR SPHERE

59. DILATION
A TRANFORMATION OF A POLYGON THAT INVOLVES A PROPORTIONAL INCREASE OR DECREASE IN SIZE OF ALL DIMENSIONS

60. DISTANCE FORMULA

61. DISTRIBUTIVE PROPERTY
THE DISTRIBUTION OF MULTIPLICATION OVER ADDITION

62. A POLYHEDRON WITH TWELVE FACES Dodecahedron net

63. DOMAIN
THE COMPLETE SET OF POSSIBLE VALUES OF THE INDEPENDENT VARIABLE IN A FUNCTION ( ALL VALUES OF X )

64. E

65. A LINE SEGMENT WHERE TWO FACES OF A POLYHEDRON MEET
EDGE
A LINE SEGMENT WHERE TWO FACES OF A POLYHEDRON MEET

66. A NUMBER, LETTER, POINT, LINE, OR ANY OTHER OBJECT CONTAINED IN A SET
ELEMENT
A NUMBER, LETTER, POINT, LINE, OR ANY OTHER OBJECT CONTAINED IN A SET

67. ENLARGEMENT
A DILATION IN WHICH THE SCALE FACTOR OR SIZE CHANGE IS GREATER THAN ONE

68. = EQUATION A MATHEMATICAL SENTENCE STATING THAT THE TWO EXPRESSIONS
HAVE THE SAME VALUE =

69. A TRIANGLE WITH THREE CONGRUENT SIDES
EQUALATERAL TRIANGLE
A TRIANGLE WITH THREE CONGRUENT SIDES

70. EXPONENT
THE VALUE THAT INDICATES HOW MANY TIMES THE BASE OCCURS AS A FACTOR THE NUMERAL 2 IS CALLED THE BASE AND THE NUMERAL 6 IS CALLED THE EXPONENT
2 X 2 X 2 X 2 X 2 X 2

71. EXPRESSION
A COLLECTION OF NUMBERS, SYMBOLS, AND / OR OPERATION SIGNS THAT STANDS FOR A NUMBER

72. EXTERIOR ANGLE
THE ANGLE FORMED BY ANY SIDE OF A POLYGON AND AN EXTENDED ADJACENT SIDE

73. F

74. FACE
ONE OF THE PLANE SURFACES BOUNDING A THREE-DIMENSIONAL FIGURE - A SIDE -

75. FLOW CHART PROOF
A CONVINCING ARGUMENT THAT USES BOXES AND ARROWS TO SHOW THE LOGICAL CONNECTIONS BETWEEN THE STATEMENTS

76. A CONVINCING ARGUMENT CONTAINING STATEMENTS AND REASONS
FORMAL PROOF
A CONVINCING ARGUMENT CONTAINING STATEMENTS AND REASONS

77. FUNCTION
A RELATION IN WHICH EACH VALUE OF THE INDEPENDENT VARIABLE IS PAIRED WITH A UNIQUE VALUE OF THE DEPENDEDNT VARIABLE

78. G

79. GEOMETRIC MEAN
THE GEOMETRIC MEAN BETWEEN TWO POSITIVE NUMBERS a AND b IS THE POSITIVE NUMBER x WHERE a/x = b/x

80. GREAT CIRCLE
A CIRCLE FORMED WHEN A PLANE INTERSECTS A SPHERE WITH ITS CENTER AT THE CENTER OF THE SPHERE A GREAT CIRCLE DIVIDES A SPHERE INTO TWO HEMISPHERES

81. H

82. A POLYGON WITH SIX FACES
HEXAHEDRON
A POLYGON WITH SIX FACES
NET

83. THE SIDE OPPOSITE THE RIGHT ANGLE
HYPOTENUSE
THE SIDE OPPOSITE THE RIGHT ANGLE

84. THE “IF” PART OF A CONDITIONAL STATEMENT PLURAL: HYPOTHESES
HYPOTHESIS
THE “IF” PART OF A CONDITIONAL STATEMENT PLURAL: HYPOTHESES

85. I

86. A POLYHEDRON WITH TWENTY FACES
ICOSAHEDRON
A POLYHEDRON WITH TWENTY FACES

87. THE POINT OF CONCURRENCY OF THE THREE ANGLE BISECTORS OF A TRIANGLE
INCENTER
THE POINT OF CONCURRENCY OF THE THREE ANGLE BISECTORS OF A TRIANGLE

88. INDEPENDENT VARIABLE
THE INPUT OF A FUNCTION

89. INDIRECT PROOF
A PROOF IN WHICH THE STATEMENT TO BE PROVEN IS ASSUMED TO BE FALSE AND THIS ASSUMPTION LEADS TO A CONTRADICTION

90. INEQUALITY
A SENTENCE THAT STATES ONE EXPRESSION IS GREATER THAN, GREATER THAN OR EQUAL TO, LESS THAN, LESS THAN OR EQUAL TO, OR NOT EQUAL TO, ANOTHER EXPRESSION

91. INSCRIBED ANGLE
AN ANGLE THAT HAS A VERTEX ON A CIRCLE AND SIDES THAT CONTAIN CHORDS OF THE CIRCLE

92. ON A GRAPH THE VALUES WHERE A FUNCTION INTERSECTS THE AXES
INTERCEPT
ON A GRAPH THE VALUES WHERE A FUNCTION INTERSECTS THE AXES

93. AN ANGLE FORMED BY TWO SIDES OF A POLYGON SHARING A COMMON VERTEX
INTERIOR ANGLE
AN ANGLE FORMED BY TWO SIDES OF A POLYGON SHARING A COMMON VERTEX

94. INTERSECTION OF SETS
THE INTERSECTION OF SETS A AND B IS THE SET OF ELEMENTS OF A THAT ARE ALSO ELEMENTS OF B IT IS DENOTED BY A ∩ B AND IS READ “ A INTERSECTION B ”

95. INVERSE
THE STATEMENT FORMED BY NEGATING BOTH THE HYPOTHESIS AND CONCLUSION OF A CONDITIONAL STATEMENT

96. IRRATIONAL NUMBERS
THE SET OF REAL NUMBERS THAT CANNOT BE EXPRESSED AS A RATIO OF TWO INTEGERS

97. A TRIANGLE WITH AT LEAST TWO CONGRUENT SIDES
ISOSCELES TRIANGLE
A TRIANGLE WITH AT LEAST TWO CONGRUENT SIDES

98. K

99. A QUADRILATERAL WITH TWO DISTICT PAIRS OF ADJACENT CONGRUENT SIDES
KITE
A QUADRILATERAL WITH TWO DISTICT PAIRS OF ADJACENT CONGRUENT SIDES

100. L

101. LATERAL EDGE
THE EDGES FORMED BY THE INTERSECTION OF THE LATERAL FACES OF A PRISM OR PYRAMID

102. A FACE OF A PRISM OR PYRAMID THAT IS NOT BEING USED AS A BASE
LATERAL FACE
A FACE OF A PRISM OR PYRAMID THAT IS NOT BEING USED AS A BASE

103. LEADING COEFFICIENT
THE COEFFICIENT OF THE FIRST TERM OF A POLYNOMIAL WHOSE TERMS ARE WRITTEN IN DESCENDING ORDER FROM LARGEST DEGREE TO SMALLEST DEGREE

104. LINE OF BEST FIT
A LINE DRAWN ON A SCATTER PLOT OF DATA THAT COMES CLOSEST TO ALL POINTS IN THE DATA SET

105. THE LINE OVER WHICH TWO FIGURES ARE MIRROR IMAGES OF EACH OTHER
LINE OF SYMMETRY
THE LINE OVER WHICH TWO FIGURES ARE MIRROR IMAGES OF EACH OTHER

106. LINE SEGMENT
A PART OF A LINE THAT CONSISTS OF TWO DEFINED ENDPOINTS AND ALL THE POINTS IN BETWEEN

107. M

108. MAPPING DIAGRAM
A DIAGRAM THAT ILLUSTRATES HOW THE ELEMENTS OF A RELATION’S DOMAIN ARE PAIRED WITH THE ELEMENTS OF THE RELATION’S RANGE

109. MEDIAN OF A TRIANGLE
THE LINE SEGMENT THAT CONNECTS A VERTEX WITH THE MIDPOINT OF THE OPPOSITE SIDE

110. MIDPOINT OF A LINE SEGMENT
THE POINT ON A LINE SEGMENT THAT IS EQUIDISTANT FROM THE ENDPOINTS

111. MIDPOINT BETWEEN TWO POINTS

112. MONOMIAL
A NUMBER, VARIABLE, OR THE PRODUCT OF A NUMBER AND ONE OR MORE VARIABLES WITH WHOLE NUMBER EXPONENTS

113. N

114. NET
A TWO-DIMENSIONAL DIAGRAM THAT CAN BE FOLDED OR MADE INTO A THREE-DIMENSIONAL FIGURE

115. O

116. OBLIQUE
A RELATIONSHIP BETWEEN LINES AND/OR PLANE FIGURES THAT IS NOT PERPENDICULAR OR PARALLEL

117. AN ANGLE WITH A MEASURE BETWEEN 90 DEGREES AND 180 DEGREES
OBTUSE ANGLE
AN ANGLE WITH A MEASURE BETWEEN 90 DEGREES AND 180 DEGREES

118. A POLYHEDRON WITH EIGHT SIDES
OCTAHEDRON
A POLYHEDRON WITH EIGHT SIDES

119. ORDERED PAIR
THE LOCATION OF A SINGLE POINT ON A RECTANGULAR COORDINATE SYSTEM WHERE THE FIRST AND SECOND VALUES REPRESENT THE POSITION RELATIVE TO THE X-AXIS AND Y-AXIS RESPECTIVELY

120. ORIGIN
THE POINT OF INTERSECTION OF THE X- AND Y-AXES IN A RECTANGULAR COORDINATE SYSTEM WHERE THE X-COORDINATE AND THE Y-COORDINATE ARE BOTH ZERO

121. THE POINT OF CONCURRENCY OF THE THREE ALTITUDES OF A TRIANGLE
ORTHOCENTER
THE POINT OF CONCURRENCY OF THE THREE ALTITUDES OF A TRIANGLE

122. P

123. THE SHAPE OF THE GRAPH OF A QUADRATIC FUNCTION
PARABOLA
THE SHAPE OF THE GRAPH OF A QUADRATIC FUNCTION

124. PARAGRAPH PROOF
A CONVINCING ARGUMENT THAT USES STATEMENTS AND REASONS CONNECTED IN SENTENCES

125. TWO LINES THAT ARE COPLANAR AND DO NOT INTERSECT
PARALLEL LINES
TWO LINES THAT ARE COPLANAR AND DO NOT INTERSECT

126. A QUADRILATERAL IN WHICH BOTH PAIRS OF OPPOSITE SIDES ARE PARALLEL
PARALLELOGRAM
A QUADRILATERAL IN WHICH BOTH PAIRS OF OPPOSITE SIDES ARE PARALLEL

127. PARALLELOGRAM AREA

128. THE DISTANCE AROUND A POLYGON
PERIMETER
THE DISTANCE AROUND A POLYGON

129. PERPENDICULAR
LINES, LINE SEGMENTS, RAYS, OR PLANES THAT INTERSECT TO FORM A RIGHT ANGLE

130. PI
THE SYMBOL DESIGNATING THE RATIO OF THE CIRCUMFERENCE OF A CIRCLE TO ITS DIAMETER IT IS AN IRRATIONAL NUMBER WITH COMMON APPROXIMATIONS OF EITHER 3.14 OR 22/7

131. PLATONIC SOLID
A POLYHEDRON FOR WHICH THE FACES ARE REGULAR CONGRUENT POLYGONS WITH THE SAME NUMBER OF EDGES MEETING AT EACH VERTEX TETRAHEDRON - HEXAHEDRON OCTAHEDRON - DODECAHEDRON ICOSAHEDRON

132. A SPECIFIC LOCATION IN SPACE THAT HAS NO DISCERNIBLE LENGTH OR WIDTH
POINT
A SPECIFIC LOCATION IN SPACE THAT HAS NO DISCERNIBLE LENGTH OR WIDTH

133. A POINT WHERE THREE OR MORE LINES INTERSECT
POINT OF CONCURRENCY
A POINT WHERE THREE OR MORE LINES INTERSECT

134. POINT-SLOPE FORM
A FORM OF A LINEAR EQUATION Y – Y = M(X – X ) WHERE M IS THE SLOPE OF THE LINE AND (X ,Y ) IS A POINT ON THE LINE 1 1 1 1

135. POLYGON
A CLOSED-PLANE FIGURE HAVING AT LEAST THREE SIDES THAT ARE LINE SEGMENTS AND ARE CONNECTED AT THEIR ENDPOINTS

136. POLYGON AREA (REGULAR)

137. A SOLID FIGURE BOUNDED BY POLYGONS POLYHEDRA
POLYHEDRON
A SOLID FIGURE BOUNDED BY POLYGONS POLYHEDRA

138. A MONOMIAL OR THE SUM OR DIFFERENCE OF TWO OR MORE MONOMIALS
POLYNOMIAL
A MONOMIAL OR THE SUM OR DIFFERENCE OF TWO OR MORE MONOMIALS

139. POSTULATE
A MATHEMATICAL STATEMENT ACCEPTED AS TRUE WITHOUT PROOF ALSO CALLED AN AXIOM

140. PRISM
A POLYHEDRON THAT HAS TWO CONGRUENT AND PARALLEL FACES JOINED BY FACES THAT ARE PARALLELOGRAMS PRISMS ARE NAMED BY THEIR BASES

141. PROOF
A LOGICAL ARGUMENT THAT DEMONSTRATES THE TRUTH OF A GIVEN STATEMENT IN A FORMAL PROOF EACH STEP CAN BE JUSTIFIED WITH A REASON SUCH AS A GIVEN, A DEFINITION, AN AXIOM, OR A PREVIOUSLY PROVEN PROPERTY OR THEOREM

142. A MATHEMATICAL EQUATION STATING THAT TWO RATIOS ARE EQUAL
PROPORTION
A MATHEMATICAL EQUATION STATING THAT TWO RATIOS ARE EQUAL

143. PYRAMID
A THREE-DIMENSIONAL FIGURE IN WHICH THE BASE IS A POLYGON AND THE FACES ARE TRIANGLES WITH A COMMON VERTEX

144. Q

145. QUADRATIC FORMULA

146. R

147. RADICAL
AN EXPRESSION THAT HAS A ROOT: SQUARE ROOT – CUBE ROOT… ANY NUMBER CAN BE SPECIFIED BY AN INDEX NUMBER. A RADICAL WITHOUT AN INDEX NUMBER IS UNDERSTOOD TO BE A SQUARE ROOT.

148. THE SYMBOL USED BEFORE A NUMBER TO SHOW THAT THE NUMBER IS A RADICAND
RADICAL SIGN
THE SYMBOL USED BEFORE A NUMBER TO SHOW THAT THE NUMBER IS A RADICAND

149. THE NUMBER THAT APPEARS WITHIN THE RADICAL SIGN IS THE RADICAND

150. RADIUS
A LINE SEGMENT EXTENDING FROM THE CENTER OF A CIRCLE OR SPHERE TO A POINT ON THE CIRCLE OR SPHERE PLURAL: RADII

151. RANGE
THE COMPLETE SET OF ALL POSSIBLE RESULTING VALUES OF THE DEPENDENT VARIABLE OF A FUNCTION

152. RATE OF CHANGE
THE RATIO THAT COMPARES THE CHANGE IN THE DEPENDENT VARIABLE TO INDEPENDENT VARIABLE

153. THE COMPARISON OF TWO QUANTITIES
RATIO
THE COMPARISON OF TWO QUANTITIES

154. RATIONAL EXPRESSION
AN ALGEBRAIC EXPRESSION THAT CAN BE WRITTEN AS A FRACTION FOR WHICH NUMERATOR AND DENOMINATOR ARE POLYNOMIALS

155. RATIONAL NUMBERS
THE SET OF ALL NUMBERS THAT CAN BE EXPRESSED AS A RATIO OF TWO INTEGERS

156. RAY
A PART OF A LINE THAT BEGINS AT A POINT AND GOES ON INDEFINITELY IN ONE DIRECTION

157. THE SET OF ALL RATIONAL AND IRRATIONAL NUMBERS
REAL NUMBERS
THE SET OF ALL RATIONAL AND IRRATIONAL NUMBERS

158. RECTANGULAR COORDINATE SYSTEM
COORDINATE GRID

159. RECTANGULAR PRISM A THREE-DIMENSIONAL FIGURE POLYHEDRON -
WITH CONGRUENT,
RECTANGULAR BASES
AND LATERAL FACES THAT
ARE PARALLELOGRAMS

160. RECTANGULAR PRISM SURFACE AREA
or: FIND THE AREA OF EACH FACE AND ADD

161. RECTANGULAR PRISM VOLUME/CAPACITY

162. REFLECTION
A TRANSFORMATION THAT PRODUCES THE MIRROR IMAGE OF A GEOMETRIC FIGURE OVER A LINE OR POINT OF REFLECTION A reflection over a line is also called a FLip

163. A POLYGON THAT IS BOTH EQUILATERAL AND EQUIANGULAR
REGULAR POLYGON
A POLYGON THAT IS BOTH EQUILATERAL AND EQUIANGULAR

164. A SOLID FIGURE WITH CONGRUENT REGULAR POLYGONS FOR ALL FACES
REGULAR POLYHEDRON
A SOLID FIGURE WITH CONGRUENT REGULAR POLYGONS FOR ALL FACES

165. RELATION
A SET OF ORDERED PAIRS

166. A PARALLELOGRAM WITH FOUR CONGRUENT SIDES
RHOMBUS
A PARALLELOGRAM WITH FOUR CONGRUENT SIDES

167. AN ANGLE FOR WHICH THE MEASURE IS EXACTLY 90 DEGREES
RIGHT ANGLE
AN ANGLE FOR WHICH THE MEASURE IS EXACTLY 90 DEGREES

168. RIGHT CIRCULAR CONE
A THREE-DIMENSIONAL FIGURE THAT HAS A CIRCULAR BASE, A VERTEX NOT IN THE PLANE OF THE CIRCLE, A CURVED LATERAL SURFACE, AND AN ALTITUDE THAT CONTAINS THE CENTER OF THE BASE.

169. RIGHT CIRCULAR CONE SURFACE AREA

170. RIGHT CIRCULAR CONE VOLUME/CAPACITY

171. RIGHT CIRCULAR CYLINDER
A CYLINDER IN WHICH THE BASES ARE PARALLEL CIRCLES PERPENDICULAR TO THE SIDE OF THE CYLINDER

172. RIGHT CIRCULAR CYLINDER SURFACE AREA

173. RIGHT CIRCULAR CYLINDER VOLUME/CAPACITY

174. RIGHT PRISM
A PRISM IN WHICH ALL THE LATERAL FACES AND EDGES ARE PERPENDICULAR TO THE BASES

175. RIGHT SQUARE PYRAMID
A POLYHEDRON IN WHICH ONE FACE, THE BASE, IS A SQUARE AND THE OTHER FACES, LATERAL FACES, ARE TRIANGLES WITH A COMMON VERTEX, WHICH IS DIRECTLY ABOVE THE CENTER OF THE BASE
NET FOR RIGHT SQUARE PYRAMID

176. RIGHT SQUARE PYRAMID SURFACE AREA

177. RIGHT SQUARE PYRAMID VOLUME/CAPACITY
Volume of Pyramid = (1/3)b²h

178. RIGHT TRIANGLE TRIGONOMETRY
FINDING THE MEASURES OF MISSING SIDES OR ANGLES OF A RIGHT TRIANGLE WHEN GIVEN THE MEASURES OF OTHER SIDES OR ANGLES

179. RIGHT TRIANGLES - SPECIAL

180. ROOTS OF A QUADRATIC FUNCTION
ZEROS OF A QUADRATIC FUNCTION THE SOLUTION OF AN EQUATION THAT HAS THE FORM Ax + Bx + C = 0 2

181. ROTATION
A TRANSFORMATION OF A FIGURE BY TURNING IT ABOUT A CENTER POINT OR AXIS. THE AMOUNT OF ROTATION IS USUALLY EXPRESSED IN THE NUMBER OF DEGREES ROTATION. THE DIRECTION OF THE ROTATION IS USUALLY EXPRESSED AS CLOCKWISE OR COUNTERCLOCKWISE. ALSO CALLED A TURN

182. RULE
A MATHEMATICAL EXPRESSION THAT DESCRIBES A PATTERN OR RELATIONSHIP OR A WRITTEN DESCRIPTION OF THE PATTERN OR RELATIONSHIP

183. S

184. SCALAR DRAWING - SCALE MODEL
A DRAWING OR MODEL THAT USES LENGTHS IN THE DRAWING THAT ARE PROPORTIONAL TO THE ACTUAL IMAGE

185. SCALE FACTOR
THE CONSTANT THAT IS MULTIPLIED BY THE LENGTH OF EACH SIDE OR A FIGURE TO PRODUCE AN IMAGE THAT IS THE SAME SHAPE AS THE ORIGINAL FIGURE

186. A TRIANGLE WITH NO CONGRUENT SIDES
SCALENE TRIANGLE
A TRIANGLE WITH NO CONGRUENT SIDES

187. A LINE THAT INTERSECTS A CIRCLE IN TWO POINTS
SECANT OF A CIRCLE
A LINE THAT INTERSECTS A CIRCLE IN TWO POINTS

188. THE REGION FORMED BY A CENTRAL ANGLE AND AN ARC
SECTOR
THE REGION FORMED BY A CENTRAL ANGLE AND AN ARC

189. SET
A COLLECTION OF ITEMS

190. SIMILAR FIGURES
FIGURES THAT HAVE CORRESPONDING ANGLES THAT ARE CONGRUENT AND HAVE CORRESPONDING SIDES THAT ARE PROPORTIONAL IN LENGTH

191. SINE - SIN
IN A RIGHT TRIANGLE THE RATIO OF THE LENGTH OF THE LEG OPPOSITE THE REFERENCE ANGLE TO THE LENGTH OF THE HYPOTENUSE

192. SLANT HEIGHT OF A REGULAR PYRAMID
THE DISTANCE FROM THE VERTEX TO THE MIDPOINT OF AN EDGE OF THE BASE

193. SLANT HEIGHT OF A RIGHT CONE
THE DISTANCE FROM A VERTEX TO A POINT ON THE EDGE OF THE BASE

194. SLOPE
THE RATIO OF CHANGE IN THE VERTICAL AXIS (Y-AXIS) TO CHANGE IN THE HORIZONTAL AXIS (X-AXIS) IN THE FORM OF RISE/RUN ALSO, THE CONSTANT, M, IN THE LINEAR EQUATION FOR THE SLOPE-INTERCEPT FORM Y = MX + B

195. SLOPE FORMULA
Where m = slope and ( x, y ) and ( x ,y ) are points on the line 2 2

196. SLOPE-INTERCEPT FORM
A FORM OF A LINEAR EQUATION Y = MX + B WHERE M IS THE SLOPE OF THE LINE AND B IS THE Y-INTERCEPT

197. SLOPE-INTERCEPT FORM – LINEAR EQUATION

198. SPHERE
A THREE-DIMENSIONAL FIGURE IN WHICH ALL POINTS ON THE FIGURE ARE EQUIDISTANT FROM A CENTER POINT

199. SPHERE SURFACE AREA

200. SPHERE VOLUME/CAPACITY

201. SQUARE ROOT
A POSITIVE REAL NUMBER THAT CAN BE MULTIPLIED BY ITSELF TO PRODUCE A GIVEN NUMBER

202. SQUIGGLE
SAME AS BREAK A ZIGZAG ON THE X-AXIS OR THE Y-AXIS IN A LINE OR BAR GRAPH INDICATING THAT DATA BEING DISPLAYED DOES NOT INCLUDE ALL VALUES

203. STANDARD FORM OF LINEAR EQUATION
Ax + By = C

204. AN ANGLE THAT MEASURES EXACTLY 180 DEGREES
STRAIGHT ANGLE
AN ANGLE THAT MEASURES EXACTLY 180 DEGREES

205. TWO ANGLES IN WHICH THE MEASURES HAVE THE SUM OF EXACTLY 180 DEGREES
SUPPLEMENTARY ANGLES
TWO ANGLES IN WHICH THE MEASURES HAVE THE SUM OF EXACTLY 180 DEGREES

206. SYMMETRY
A TERM DESCRIBING THE RESULT OF A LINE DRAWN THROUGH THE CENTER OF A FIGURE SUCH THAT THE TWO HALVES OF THE FIGURE ARE REFLECTIONS OF EACH OTHER ACROSS THE LINE. WHEN A FIGURE IS ROTATED AROUND A POINT AND FITS EXACTLY ON ITSELF IT HAS ROTATIONAL SYMMETRY

207. T

208. TANGENT (TAN)
IN A RIGHT TRIANGLE, THE RATIO OF THE LENGTH OF THE LEG OPPOSITE THE REFERENCE ANGLE TO THE LENGTH OF THE LEG ADJACENT TO THE GIVEN ANGLE

209. TANGENT TO A CIRCLE
A LINE IN THE PLANE OF THE CIRCLE THAT INTERSECTS THE CIRCLE IN EXACTLY ONE POINT, CALLED THE POINT OF TANGENCY

210. TERM
A NUMBER, VARIABLE, PRODUCT, OR QUOTIENT IN AN EXPRESSION A TERM IS NOT A SUM OR DIFFERENCE

211. TESSELLATION
A COVERING OF A PLANE WITHOUT OVERLAPS OR GAPS USING COMBINATIONS OF CONGRUENT FIGURES

212. A POLYHEDRON WITH FOUR FACES
TETRAHEDRON
A POLYHEDRON WITH FOUR FACES

213. THEOREM
A MATHEMATICAL STATEMENT THAT CAN BE SHOWN TO BE TRUE BASED ON POSTULATES, DEFINITIONS, OR OTHER PROVEN THEOREMS

214. THREE-DIMENSIONAL FIGURE
A FIGURE HAVING LENGTH, HEIGHT, AND WIDTH

215. TRANSFORMATION
AN OPERATION ON A GEOMETRIC FIGURE BY WHICH AN IMAGE IS CREATED. COMMON TRANSFRMATIONS INCLUDE REFLECTION = FLIPS TRANSLATIONS = SLIDES ROTATIONS = TURNS DILATIONS = SIZE

216. TRANSLATION
A TRANSFORMATION IN WHICH EVERY POINT IN A FIGURE IS MOVED IN THE SAME DIRECTION AND BY THE SAME DISTANCE ALSO CALLED A SLIDE

217. A LINE THAT INTERSECTS TWO OR MORE LINES AT DIFFERENT POINTS
TRANSVERSAL
A LINE THAT INTERSECTS TWO OR MORE LINES AT DIFFERENT POINTS

218. A QUADRILATERAL WITH EXACTLY ONE PAIR OF PARALLEL SIDES
TRAPEZOID
A QUADRILATERAL WITH EXACTLY ONE PAIR OF PARALLEL SIDES

219. TRAPEZOID AREA

220. TRIANGLE AREA

221. THE RATIO OF TWO SIDES OF A RIGHT TRIANGLE COSINE – SINE - TANGENT
TRIGONOMETRIC RATIO
THE RATIO OF TWO SIDES OF A RIGHT TRIANGLE COSINE – SINE - TANGENT

222. TWO-COLUMN PROOF
A PROOF IN WHICH THE STATEMENTS ARE WRITTEN IN THE LEFT COLUMN AND THE REASONS ARE WRITTEN IN THE RIGHT COLUMN

223. U

224. UNION OF SETS
THE UNION OF TWO SETS A AND B IS THE SET OF ELEMENTS THAT ARE IN A OR IN B OR IN BOTH. IT IS DENOTED BY AND IS READ “A UNION B”

225. V

226. A SYMBOL USED TO REPRESENT A QUANTITY THAT CAN CHANGE
VARIABLE
A SYMBOL USED TO REPRESENT A QUANTITY THAT CAN CHANGE

227. A DIAGRAM THAT SHOWS RELATIONSHIPS AMONG SETS
VENN DIAGRAM
A DIAGRAM THAT SHOWS RELATIONSHIPS AMONG SETS

228. VERTEX
THE POINT COMMON TO THE TWO RAYS THAT FORM AN ANGLE; THE POINT COMMON TO ANY TWO SIDES OF A POLYGON; THE POINT COMMON TO THREE OR MORE EDGES OF A POLYHEDRON PLURAL: VERTICES

229. THE OPPOSITE OR NONADJACENT ANGLES FORMED WHEN TWO LINES INTERSECT
VERTICAL ANGLES
THE OPPOSITE OR NONADJACENT ANGLES FORMED WHEN TWO LINES INTERSECT

230. VOLUME
THE AMOUNT OF SPACE OCCUPIED IN THREE DIMENSIONS AND EXPRESSED IN CUBIC UNITS. BOTH CAPACITY AND VOLUME ARE USED TO MEASURE EMPTY SPACES; HOWEVER, CAPACITY USUALLY REFERS TO FLUID MEASURES WHEREAS VOLUME IS DESCRIBED BY CUBIC UNITS

231. X

232. THE HORIZONTAL NUMBER LINE ON A RECTANGULAR COORDINATE SYSTEM
X-AXIS
THE HORIZONTAL NUMBER LINE ON A RECTANGULAR COORDINATE SYSTEM

233. X-INTERCEPT
THE VALUE OF X AT THE POINT WHERE A LINE OR GRAPH INTERSECTS THE X-AXIS. THE VALUE OF Y IS ZERO AT THIS POINT. CAN BE EXPRESSED AS AN ORDERED PAIR OR X-INTERCEPT EQUALS A VALUE

234. Y

235. THE VERTICAL NUMBER LINE ON A RECTANGULAR COORDINATE SYSTEM
Y-AXIS
THE VERTICAL NUMBER LINE ON A RECTANGULAR COORDINATE SYSTEM

236. Y-INTERCEPT
THE VALUE OF Y AT THE POINT WHERE A LINE OR GRAPH INTERSECTS THE Y-AXIS. THE VALUE OF X IS ZERO AT THIS POINT. CAN BE EXPRESSES AS AN ORDERED PAIR OR Y-INTERCEPT EQUALS A VALUE

237. Z

238. ZERO PRODUCT PROPERTY
IF THE PRODUCT OF TWO OR MORE QUANTITIES EQUALS ZERO, THEN AT LEAST ONE OF THE QUANTITIES IS EQUAL TO ZERO

239. ZEROS OF A QUADRATIC EQUATION
THE SOLUTIONS OF AN
EQUATION THAT HAS THE
FORM
AX + BX + C = 0 2