Geometry Vocabulary
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Created by:
pking_hillelday on May 5, 2012
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Description:
chapter 10 vocabulary
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25 terms
Terms | Definitions |
|---|---|
 adjacent angles | are a pair of angles with a common vertex and a common side, but no common interior points |
| alternate exterior angles | Angles that lay outside the parallel lines and are on opposite sides of the transversal; They are congruent. |
| altitude | a perpendicular segment from a vertex to the line containing the opposite side |
| base | any side of a parallelogram; the altitude is perpindicular to the base |
| circle | The set of all points in a plane that are the same distance from a given point called the center |
| circumference | The distance around a circle |
| complementary angles | two angles whose measures have a sum of 90 degrees |
| composite figures | a figure that can not be classified as a single polygon or circle |
| congruent | figures that have the same size and shape |
| corresponding angles | Angles that have the same position on two different parallel lines cut by a transversal |
| diameter | the length of a straight line passing through the center of a circle and connecting two points on the circumference |
| dilation | A transformation that changes the size of an object, but not the shape. |
| parallel lines | lines in the same plane that never intersect |
| parallelogram | a quadrilateral whose opposite sides are both parallel and congruent |
| perpindicular lines | lines that intersect to form right angles |
| quadrilateral | a four-sided polygon |
| radius | the length of a line segment from the center of a circle to a point on the circle |
| reflection | A transformation that "flips" a figure over a mirror or reflection line. |
| regular polygon | a polygon with all sides and all angles congruent |
| rhombus | a parallelogram with four equal congruent |
| supplementary angles | two angles whose measures have a sum of 180 degrees |
| transformation | a movement of a geometric figure that may change the size or position of the figure |
| translation | A movement of a figure along a straight line |
| trapezoid | a quadrilateral with exactly one pair of parallel sides |
| vertical angles | a pair of opposite congruent angles formed by intersecting lines |
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