Alternate angles

Front

What are alternate angles?

Back

Angles that are on opposite sides of a transversal and are either both inside or both outside the parallel lines.

Front

What is the measure of angle 4 if angle 8 measures 76°?

Back

76° (Alternate angles are equal when lines are parallel.)

Front

Identify the pair of angles that are alternate interior angles: angle 1 and angle 2, angle 3 and angle 4, angle 7 and angle 2, or angle 5 and angle 6?

Back

Angle 7 and angle 2.

Front

What is the relationship between parallel lines and their slopes?

Back

Parallel lines have the same slope.

Front

Which statement is NOT true about parallel lines?

Back

Parallel lines intersect at one point.

Front

What are corresponding angles?

Back

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

Front

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

Back

They are equal.

Front

What is the sum of the interior angles on the same side of a transversal?

Back

They are supplementary (add up to 180°).

Front

Define alternate interior angles. Give an example.

Back

Angles that lie between the two lines and on opposite sides of the transversal. Example: angle 2 and angle 7.

Front

What is the measure of angle 3 if angle 5 measures 120°?

Back

60° (Angle 3 is an alternate interior angle to angle 5.)