Angle Relationships

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

If one angle measures 50 degrees, what is the measure of its supplementary angle?

Back

130 degrees.

Front

If one angle measures 76 degrees, what is the measure of its complementary angle?

Back

14 degrees.

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

What is the measure of a right angle?

Back

90 degrees.

Front

If two angles are vertical angles, what can be said about their measures?

Back

They are equal.

Front

What is the relationship between adjacent angles that form a straight line?

Back

They are supplementary.

Front

If two angles are complementary, and one angle measures 40 degrees, what is the measure of the other angle?

Back

50 degrees.

Front

What do you call angles that are on opposite sides of a transversal and are equal?

Back

Alternate interior angles.