Acute Angle, Adjacent Angles, Angle, Angle Bisector, Collinear Points, Complementary Angles, Congruency - Identical in shape and size. Can be applied to line segments, angles, and figures. Line segments are equal in length. Angles are of equal measure., Construction, Coplanar Points, Linear Pair, Line Segment, Midpoint, Obtuse Angle, Opposite Rays, Point - Undefined term described as an abstract concept representing a specific location in space, having no size, length, width, or depth. It is typically marked by a dot represented by a capital letter. It is considered a fundamental building block for constructing lines and shapes., Line  - Undefined term described as a set of points extending in opposite directions infinitely. It is determined by two points in a two-dimensional plane., Plane - Undefined term described as a flat, two-dimensional surface that extends infinitely in all directions, having no thickness and considered as a perfect, endless flat surface, Postulate - A rule that is accepted without proof., Ray - A part of a line that has one fixed endpoint and extends infinitely in one direction., Right Angle, Segment Bisector, Supplementary Angles, Straight Angle, Vertical Angles - A pair of non-adjacent angles formed by the intersection of two straight lines. (Opposite angles formed when two lines intersect.), Undefined Terms - Words that do not have formal definitions, but there is agreement about what they mean. In geometry, the words point, line and plane.,

Geometry Foundations Vocabulary

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