Geometry Definition

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Last updated 12:21 PM on 9/25/26
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13 Terms

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Adjacent Angles

2 angles that share a vertex, side, and no interior points

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Angle

Two rays with the same endpoint

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=+=

If point D is in the interior of angle ABC, then ABC + DBC = ABC

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Angle Bisector

Line, ray, or segment that divides an angle into 2 equal measures

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Collinear

Points on the same line

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Complementary Angles

2 angles whose sum is 90 degrees

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Congruent Figures

2 or more figures with the same size and shape

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Midpoint

A point that divides a 2 congruent segments

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Obtuse Angle

An angle whose measure is between 90 and 180

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Right Angle

90 degree angle

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Supplementary Angles

2 angles whose sum is 180 degrees

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Vertical Angles

one of a pair of opposite angles formed when two straight lines intersect

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diameter

is any S.L drawn through the center and surrounded by the circle also bisects the circle