Understanding Angles: A Flashcard

Front

What type of angle is exactly 90 degrees?

Back

Right angle

Front

What is the measure of an angle that is supplementary to a 70-degree angle?

Back

110 degrees

Front

Which of the following angles is greater than 90 degrees but less than 180 degrees?

Back

Obtuse angle

Front

Which angle is larger: a 120-degree angle or a 60-degree angle?

Back

120-degree angle

Front

If an angle measures 45 degrees, what type of angle is it?

Back

Acute angle

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.

Front

What is a reflex angle?

Back

An angle that measures more than 180 degrees but less than 360 degrees.

Front

What do we call two angles that add up to 180 degrees?

Back

Supplementary angles.