Transversals & Angles

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal in measure.

Front

Define corresponding angles.

Back

Corresponding angles are pairs of angles that are in the same position on two different parallel lines cut by a transversal. They are equal in measure.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that lie between two parallel lines and on opposite sides of a transversal. They are equal in measure.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that lie outside two parallel lines and on opposite sides of a transversal. They are equal in measure.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

If angle 1 and angle 2 are supplementary, and angle 1 measures 70 degrees, what is the measure of angle 2?

Back

Angle 2 measures 110 degrees, since 180 - 70 = 110.

Front

If angle 3 and angle 4 are complementary, and angle 3 measures 30 degrees, what is the measure of angle 4?

Back

Angle 4 measures 60 degrees, since 90 - 30 = 60.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal to each other.

Front

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

Back

Corresponding angles are equal.