Geometry Vocabulary - Chapter 1.1

Front 1

Collinear

Back 1

Collinear means on the same line

Front 2

Coplanar

Back 2

Coplanar means on the same plane

Front 3

Congruent

Back 3

Two segments are congruent segments if and only if they have the same measure or length. The symbol for congruence is , and you say it as “is congruent to.”

Front 4

Midpoint

Back 4

The midpoint of a segment is the point on the segment that is the same distance from both endpoints. The midpoint bisects the segment, or divides the segment into two congruent segments

Front 5

Ray

Back 5

A ray begins at a point and extends infinitely in one direction. You need two letters to name a ray. The first letter is the endpoint of the ray, and the second letter is any other point that the ray passes through.

Front 6

Line Segment

Back 6

A line segment consists of two points called the endpoints of the segment and all the points between them that are collinear with the two points