point - a location in space, line - a set of collinear points that extends continuously, without end in both directions, plane - a set of points on a flat surface that extends indefinitely in all directions, collinear - points on the same line, coplanar - points on the same plane, axiom - a statement that is accepted as true without proof, congruent figures - figures that have the same size and shape, similar figures - figures that have the same shape only, line segment - a part of a line having two endpoints, Line Segment Addition Postulate - If A, B, & C are collinear, and B is between A and C, then AB + BC = AC, bisect - to cut an object into two congruent parts, midpoint - something that bisects a segment into two congruent segments, opposite rays - two rays with a common endpoint going in oppotsite directions, angle - 2 different rays that have the same endpoint called a vertex, congruent angles - Angles with the same measure, exterior points - points existing outside an angle, interior points - poins existing inside an engle, adjacent angles - 2 angles that share a common vertex but have no common interior points, angle bisector - a ray that cuts an angle onto two congruent angles, complementary - angles whose sum is 90 degrees, supplementary - angles whose sum is 180 degree, vertical angles - 2 angles whose sides form 2 pairs of opposite rays, theorem - a statemen that can be proved using previously established statements (postulates, definitions, properties), postulate - a statement that CAN'T be proven. It is accepted as true without proof, linear pairs - two adjacent angles whose non-common sides are opposite rays, linear pair postulate - if two angles form a linear pair, then they are supplementary,

Unit 1: Geometry Basics Vocab

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