Presentation on theme: "Points, Lines, and Shapes!"— Presentation transcript:
1Points, Lines, and Shapes! GeometryPoints, Lines, and Shapes!
2Planeplane A flat surface that stretches into infinity.
3Pointpoint A location in a plane or in space, having no dimensions.
4Line Segmentline segment Two points on a line, and all the points between those two points.
5Lineline A straight set of points that extends into infinity in both directions.
6Rayray part of a line, with one endpoint, and extending to infinity in one direction.
7Intersecting Linesintersecting lines Lines that have one and only one point in common.
8Parallel Linesparallel lines Two lines are parallel if they are in the same plane and never intersect.
9Perpendicular Linesperpendicular lines Two lines are perpendicular if the angle between them is 90 degrees.
10Angleangle The union of two rays with a common endpoint, called the vertex.
11Acute Angleacute angle A positive angle measuring less than 90 degrees.
12Right Angleright angle An angle whose measure is 90 degrees.
13Obtuse Angleobtuse angle An angle whose measure is greater than 90 degrees.
14Straight Anglestraight angle An angle that measures 180 degrees.
15Polygonpolygon A closed plane figure made up of several line segments that are joined together.
16Triangle triangle A three-sided polygon. Triangles can be classified according to the measures of their angles and their sides.
17Acute Triangleacute triangle A triangle each of whose angles measures less than 90 degrees.
18Right Triangleright triangle A triangle that contains a right angle.
19Obtuse Triangleobtuse triangle A triangle with an obtuse angle.
20Scalene Trianglescalene triangle A triangle with no congruent (exactly the same size and shape) sides.
21Isosceles Triangleisosceles triangle A triangle with two congruent (exactly the same size and shape) sides.
22Equilateral Triangleequilateral triangle A triangle with all sides that are congruent (exactly the same size and shape).
23Circlecircle The set of points in a plane that are a fixed distance from a given point, called the center.
24Circlecircle The set of points in a plane that are a fixed distance from a given point, called the center.
25Quadrilateralquadrilateral Any four-sided figure is called a quadrilateral.
26Parallelogramparallelogram A quadrilateral with opposite sides parallel.
27Rectanglerectangle A parallelogram with four 90-degree (right) angles.
28Squaresquare A parallelogram with four congruent (equal) sides and four 90 degree (right) angles.
29Rhombus rhombus A parallelogram with four congruent (equal) sides. Opposite angles are congruent.
30Trapezoidtrapezoid A quadrilateral that has exactly one pair of parallel sides.The parallel sides are called bases.The non-parallel sides are called legs.If the legs have the same length, then the trapezoid is an isosceles trapezoid.Isosceles TrapezoidIsosceles Trapezoid
31Kitekite A quadrilateral that is shaped like a diamond. Sometimes people like to fly them! It has two distinct pairs of adjacent (side-by-side) congruent sides.
32Cylindercylinder a solid figure that has two parallel bases that are congruent circles
33Conecone a solid figure that has a flat, circular base and one vertex
34Cubecube a solid figure with six congruent square faces
35Square PyramidSquare Pyramid a solid figure with a square base and with four triangular faces that have a common point
36Rectangular PrismRectangular Prism a solid figure in which all six faces are rectangles.
37Rotation (turn)Rotation (turn) a movement of a figure to a new position by turning it around a vertex
38Reflection (flip)Reflection (flip) a movement of a figure to a new position by flipping it over a line
39Translation (slide)Translation (slide) a movement of a figure to a new position along a straight line