Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet or intersect, no matter how far they are extended.

Front

What is a transversal?

Back

A transversal is a line that crosses at least two other lines in the same plane.

Front

What is the relationship between corresponding angles when a transversal cuts parallel lines?

Back

Corresponding angles are equal when a transversal cuts parallel lines.

Front

What are alternate interior angles?

Back

Alternate interior angles are angles that are on opposite sides of the transversal and inside the two lines. They are equal when the lines are parallel.

Front

What are consecutive interior angles?

Back

Consecutive interior angles are angles that are on the same side of the transversal and inside the two lines. They are supplementary when the lines are parallel.

Front

If angle 1 is 30 degrees, what is the measure of angle 2 if they are corresponding angles?

Back

Angle 2 is also 30 degrees.

Front

If angle 3 is 48 degrees, what is the measure of angle 4 if they are alternate interior angles?

Back

Angle 4 is also 48 degrees.

Front

If angle 5 is 45 degrees, what is the measure of angle 6 if they are consecutive interior angles?

Back

Angle 6 is 135 degrees.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

If one angle in a triangle is 90 degrees, what is the sum of the other two angles?

Back

The sum of the other two angles is 90 degrees.