Jeopardy Geometry

Circles 1 Triangles 2 Polygons 3 Formulas 4 Angles 5 Pot Luck

All points on a circle are the same distance from this point. (100)

Center

A line segment that passes through the center of a circle and has both endpoints on the circle (200)

Diameter

A line segment that has one endpoint at the center and the other endpoint on the circle (300)

Radius

A line segment with both endpoints on a circle (400)

Chord

The distance around a circle (500)

Circumference

A triangle with a right angle (100)

Right Triangle

A polygon with three sides (200)

Triangle

A triangle with three congruent sides (300)

Equilateral triangle

A triangle with at least two congruent sides (400)

Isosceles triangle

A triangle with no congruent sides (500)

Scalene triangle

A polygon with five sides (100)

Pentagon

Any polygon with 4 sides (200)

Quadrilateral

A polygon with eight sides (300)

Octagon

A quadrilateral with both pairs of opposite side parallel (400)

Parallelogram

A parallelogram with four right angles and four congruent sides (500)

Square

S + S + S= (100)

Perimeter of a triangle

L X W length times width (200)

Area of a rectangle or square

1/2 x B x H 1/2 times base times height (300)

Area of a triangle

3.14 (400 )

pi

pi times diameter or 2 x pi x radius (500)

Circumference of a circle

Instrument used to measure and draw angles (100)

Protractor

Measures less than 90 degrees (200)

Acute angle

Measures exactly 90 degrees (300)

Right angle

Measures exactly 180 degrees (400)

Straight angle

Measures more than 90 degrees but less than 180 degrees (500)

Obtuse angle

Made up of two rays with a common endpoint (100)

Angle

Figures that have the same size and same shape (200)

Congruent

The distance around the outside of a figure (300)

Perimeter

The number of square units inside a figure (400)

Area

The common endpoint where two rays meet (500)

Vertex