Types of angles

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that is greater than 90 degrees and less than 180 degrees.

Front

What is the measurement of a right angle?

Back

90 degrees.

Front

What is an acute angle?

Back

An acute angle is an angle that is less than 90 degrees.

Front

What is a reflex angle?

Back

A reflex angle is an angle that is greater than 180 degrees and less than 360 degrees.

Front

What do you call two lines that never meet?

Back

Parallel lines.

Front

What is the sum of angles in a triangle?

Back

The sum of angles in a triangle is always 180 degrees.

Front

What type of angle is exactly 90 degrees?

Back

A right angle.

Front

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

Back

It is an acute angle.

Front

If an angle measures 120 degrees, what type of angle is it?

Back

It is an obtuse angle.

Front

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

Back

Complementary angles.