GEOMETRY Unit 1 Vocabulary

Front

line

Back

made up of points with no thickness or width

Front

line segment

Back

a line consisting of two endpoints and all points between them

Front

collinear

Back

points that lie on the same line

Front

non-collinear

Back

points that do not lie on the same line

Front

coplanar

Back

points that lie on the same plane

Front

non-coplanar

Back

points that do not lie on the same plane

Front

congruent segments

Back

two segments that have the same length

Front

angle bisector

Back

A ray that divides an angle or segment into two equal parts

Front

perpendicular

Back

Two lines that intersect at a 90-degree angle (right angle).

Front

angle

Back

The space between two rays that share a common endpoint.