Geometry Vocabulary

A location with no size or shape.

• point

• line

• plane

• collinear

• coplanar

Points that lie on the same plane.

• point

• line

• plane

• collinear

• coplanar

Points that lie on the same line.

• point

• line

• plane

• collinear

• coplanar

made up of points with no thickness or width; extends indefinitely in both directions.

• point

• line

• plane

• collinear

• coplanar

a flat surface made up of points that extends indefinitely in all directions.

• point

• line

• plane

• collinear

• coplanar

a line that extends indefinitely in one direction.

• line segement

• ray

• angle

• adjacent angles

• vertical angles

congruent angles that are across from each other on intersecting lines.

• line segment

• ray

• angle

• adjacent angles

• vertical angles

Two angles that share a common vertex and side.

• line segment

• ray

• angle

• adjacent angles

• vertical angles

a measurable part of a line consisting of two endpoints.

• line segment

• ray

• angle

• adjacent angles

• vertical angles

the intersection of two rays at a common endpoint.

• line segment

• ray

• angle

• adjacent angles

• vertical angles