naming angles and solving angles

Front

What is a complementary angle?

Back

Two angles that add up to 90 degrees.

Front

What is a supplementary angle?

Back

Two angles that add up to 180 degrees.

Front

What is a vertical angle?

Back

A pair of angles that are across from each other and are congruent.

Front

What do supplementary angles add up to?

Back

180 degrees.

Front

What do complementary angles add up to?

Back

90 degrees.

Front

If one angle is 30 degrees, what is its complementary angle?

Back

60 degrees.

Front

If one angle is 120 degrees, what is its supplementary angle?

Back

60 degrees.

Front

What is the sum of angles in a triangle?

Back

180 degrees.

Front

What is an acute angle?

Back

An angle that is less than 90 degrees.

Front

What is a right angle?

Back

An angle that is exactly 90 degrees.