Geometry Terms Unit 1

Front

Point

Back

A location in space with no dimensions, represented by a dot.

Front

Line

Back

A continuos set of points thar extend forever in two directions

Front

Collinear

Back

3 or more points that lie on the same line.

Front

Line segment

Back

A part of a line with two endpoints.

Front

Midpoint

Back

The point that divides a line segment into two equal parts.

Front

Ray

Back

A part of a line that starts at an endpoint and extends infinitely in one direction.

Front

Angle

Back

Formed by two rays with a common endpoint called the vertex.

Front

Vertex

Back

The common endpoint of the rays forming an angle.

Front

Right angle

Back

An angle that measures 90 degrees.

Front

Straight angle

Back

An angle that measures 180 degrees.