Angles formed by transversals

Front

What is a transversal?

Back

A line that crosses at least two other lines and is used to determine if two lines are parallel.

Front

Name the angle relationship formed by angles that are on opposite sides of the transversal and inside the two lines.

Back

Alternate Interior Angles

Front

What is the angle relationship for angles 1 & 6 when a transversal crosses two parallel lines?

Back

Alternate Exterior Angles

Front

What is the angle relationship for angles 2 & 3 when a transversal crosses two parallel lines?

Back

Consecutive Interior Angles

Front

What is the angle relationship for angles 5 & 7 when a transversal crosses two parallel lines?

Back

Consecutive Interior Angles

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines in relation to a transversal.

Front

Define alternate exterior angles.

Back

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

Front

What is the sum of the measures of consecutive interior angles when the lines are parallel?

Back

180 degrees.

Front

If two lines are cut by a transversal and the alternate interior angles are equal, what can be concluded about the lines?

Back

The lines are parallel.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal.