Angles

Front

What is an angle that measures exactly 180°?

Back

A straight angle.

Front

What type of angle is less than 90°?

Back

Acute angle.

Front

What is an angle that measures exactly 90°?

Back

A right angle.

Front

What type of angle measures exactly 180°?

Back

A straight angle.

Front

What type of angle is between 90° and 180°?

Back

An obtuse angle.

Front

What is the sum of angles in a triangle?

Back

180°.

Front

What do you call an angle that measures more than 180° but less than 360°?

Back

Reflex angle.

Front

What is the term for angles that add up to 90°?

Back

Complementary angles.

Front

What is the term for angles that add up to 180°?

Back

Supplementary angles.

Front

What is the name of an angle that measures exactly 0°?

Back

Zero angle.