Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet; they are always the same distance apart.

Front

What is a transversal?

Back

A transversal is a line that intersects two or more lines at different points.

Front

What are corresponding angles?

Back

Corresponding angles are angles that are in the same position at each intersection where a transversal crosses two lines.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that lie between two lines and on opposite sides of a transversal.

Front

What are consecutive exterior angles?

Back

Consecutive exterior angles are pairs of angles that lie outside two lines and on the same side of a transversal.

Front

What is the relationship between alternate interior angles when lines are parallel?

Back

When two parallel lines are cut by a transversal, alternate interior angles are congruent.

Front

What is the relationship between corresponding angles when lines are parallel?

Back

When two parallel lines are cut by a transversal, corresponding angles are congruent.

Front

What is the relationship between consecutive interior angles when lines are parallel?

Back

When two parallel lines are cut by a transversal, consecutive interior angles are supplementary.

Front

What is the sum of the angles on a straight line?

Back

The sum of the angles on a straight line is 180 degrees.

Front

How do you find the measure of an angle when given its supplementary angle?

Back

To find the measure of an angle that is supplementary to a given angle, subtract the measure of the given angle from 180 degrees.