Measure and Classify Angles (2024)

Front

What type of angle measures less than 90 degrees?

Back

An acute angle.

Front

What is the measure of a right angle?

Back

90 degrees.

Front

What type of angle measures greater than 90 degrees but less than 180 degrees?

Back

An obtuse angle.

Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.

Front

How do you label an angle using three points?

Back

Use the format ∠ABC, where B is the vertex.

Front

What is the sum of angles in a triangle?

Back

180 degrees.

Front

If an angle measures 0 degrees, what type of angle is it?

Back

It is called a zero angle.

Front

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

Back

Complementary angles.

Front

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

Back

Supplementary angles.

Front

If two angles are equal, what do we call them?

Back

Congruent angles.