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27 Cards in this Set

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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 end-point to end-point.
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