Parallel Lines and Transversal

Front

What are parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.

Tags

CCSS.HSG.CO.A.1

Front

What is a transversal?

Back

A line that crosses two or more other lines in the same plane.

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines cut by a transversal.

Tags

CCSS.8.G.A.5

Front

What are alternate interior angles?

Back

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

Tags

CCSS.8.G.A.5

Front

What are alternate exterior angles?

Back

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

Tags

CCSS.8.G.A.5

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines cross; they are always equal.

Tags

CCSS.7.G.B.5

Front

If two parallel lines are cut by a transversal, what can be said about the corresponding angles?

Back

They are equal.

Tags

CCSS.8.G.A.5

Front

If two parallel lines are cut by a transversal, what can be said about the alternate interior angles?

Back

They are equal.

Tags

CCSS.8.G.A.5

Front

If two parallel lines are cut by a transversal, what can be said about the same-side interior angles?

Back

They are supplementary (add up to 180 degrees).

Tags

CCSS.8.G.A.5

Front

What is the relationship between angle 1 and angle 4 if they are vertical angles?

Back

They are equal.

Tags

CCSS.7.G.B.5