Angle Relationships Flashcardziz

Front

What are vertical angles?

Back

Vertical angles are angles that are opposite each other when two lines intersect. They are always congruent (equal measures).

Front

What is the sum of the measures of complementary angles?

Back

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

Front

What is the sum of the measures of supplementary angles?

Back

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

Front

Give an example of a pair of complementary angles.

Back

An example of complementary angles is 17° and 73°.

Front

What kind of angles are 53° and 127°?

Back

53° and 127° are supplementary angles because they add up to 180 degrees.

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

What are corresponding angles?

Back

Corresponding angles are angles that are in the same position on two parallel lines cut by a transversal.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always congruent (equal in measure).

Front

If one angle measures 45°, what is the measure of its complementary angle?

Back

The complementary angle measures 45° because 90° - 45° = 45°.

Front

If two angles are supplementary and one measures 120°, what is the measure of the other angle?

Back

The other angle measures 60° because 180° - 120° = 60°.