Parallel Lines and Transversal Vocabulary

Front

Lines on the same plane that never intersect or cross.

Back

Parallel

Tags

CCSS.HSG.CO.A.1

Front

Outside the parallel lines, on the same side of the transversal, and supplementary.

Back

Same side exterior

Tags

CCSS.8.G.A.5

Front

Angles inside the parallel lines.

Back

Interior

Tags

CCSS.8.G.A.5

Front

Share a vertex and are equal in measure.

Back

Vertical

Front

Angles that are equal in measure.

Back

Congruent

Tags

CCSS.8.G.A.2

Front

Lines that intersect at a right angle (90 degrees).

Back

Perpendicular

Tags

CCSS.HSG.CO.A.1

Front

A line that crosses two or more other lines.

Back

Transversal

Tags

CCSS.HSG.CO.A.1

Front

Angles that are on opposite sides of the transversal and inside the parallel lines.

Back

Alternate interior

Tags

CCSS.8.G.A.5

Front

Angles that are on opposite sides of the transversal and outside the parallel lines.

Back

Alternate exterior

Tags

CCSS.8.G.A.5

Front

Two angles that add up to 180 degrees.

Back

Supplementary

Tags

CCSS.7.G.B.5