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Geometry Vocab1

Practice your Vocabulary!

QuestionAnswer
Point location in the space, and has no length, width, or thickness.
Line a straight one-dimensional figure having no thickness and extending infinitely in both directions containing at least two points
Plane a flat, two-dimensional surface that extends indefinitely, containing at least three noncollinear points
Ray to a line or segment with one fixed starting point (endpoint) and a direction.
Segments a part of a line containing two endpoints
Opposite Rays two rays that both start from a common endpoint and go off in exactly opposite directions
Angles formed from two straight lines or rays with a common endpoint (vertex).
Complementary Angles Two angles that have a sum of 90 degrees
Supplementary Angles Two angles that have a sum of 180 degrees
Linear Pair A set of supplementary angles that are also adjacent; two angles that form a straight line.
Adjacent Angles Angles that share a ray, and have no common interior points.
Angle Bisector A ray that partitions an angle into two equal (congruent) parts.
Acute An angle that measures less than 90 degrees.
Angle Addition Postulate The measure of a larger angle is the sum of the measures of the two smaller adjacent angles.
Obtuse An angle that measures more than 90 degrees.
Right An angle that measures exactly 90 degrees.
Collinear Points that lie on the same line.
Coplanar Points that lie within the same plane.
Created by: Tusons
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