Parallel Lines cut by Transversals

Front

What are parallel lines?

Back

Lines that never intersect and are always the same distance apart.

Front

What is a transversal?

Back

A line that crosses two or more other lines.

Front

Define alternate interior angles.

Back

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

Front

Define corresponding angles.

Back

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

Front

Define vertical angles.

Back

Angles that are opposite each other when two lines intersect.

Front

What are consecutive interior angles?

Back

Angles that are on the same side of the transversal and inside the two lines.

Front

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

Back

They are equal.

Front

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

Back

They are equal.

Front

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

Back

They are supplementary (add up to 180 degrees).

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal.