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27 Cards in this Set
 Front
 Back
An angle that has a measure less than a right angle (less than 90 degrees)

Acute Angle


A figure formed by two line segments or rays that share the same endpoint

Angle


The bottom of a figure

Base


The amount a container can hold when filled

Capacity


A figure with no open spaces in its sides

Closed Figure


Having the same size and shape

Congruent


A polygon that is a flat surface of a solid figure

Face


A movement of a figure to a new position by flipping the figure over a line.

Flip


Lines that cross each other at exactly one point

Intersection


A straight line going on forever in opposite directions

Line


A part of a line that includes two points, called endpoints, and all the points between them.

Line Segment


An angle that has a measure greater than a right angle

Obtuse


Lines that never intersect and are always the same distance apart

Parallel lines


Two lines that intersect to form four right angles

Perpendicular


An exact location in space

Point


A part of a line that has a beginning but no end.

Ray


A flip

Reflection


An angle that forms a square cornger and has a measure of 90 degrees.

Right


A movement of a figure to a new position by rotating the figure around a point.

Rotation


The movement of a figure by a slide, flip, or turn

Translation


A movement of a figure to a new position without turning or flipping it.`

Slide


The point where two or more rays meet; the point of intersection of two sides of a polygon; the point of intersection of three or more edges of a solid figure; the top point of a cone; the plural of vertex is vertices.

Vertex


A flat surface that extends without end in all directions.

Plane


A figure in a plane that is formend by lines that are curved, straight, or both.

Plane Figure


A closed plane figure whose sides are straight lines that are connected endpoint to endpoint.

Polygon


Having the same shape and the same of different size

similar polygons


A polyon that has sides that are the same length

Regular Polygon
