Identify Angles: Right, Acute, & Obtuse

Front

What is an obtuse angle?

Back

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

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is an acute angle?

Back

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

Front

How many degrees are in a straight angle?

Back

A straight angle measures exactly 180 degrees.

Front

What type of angle is 45 degrees?

Back

45 degrees is an acute angle.

Front

What type of angle is 120 degrees?

Back

120 degrees is an obtuse angle.

Front

What type of angle is 90 degrees?

Back

90 degrees is a right angle.

Front

If an angle measures 30 degrees, what type of angle is it?

Back

30 degrees is an acute angle.

Front

If an angle measures 150 degrees, what type of angle is it?

Back

150 degrees is an obtuse angle.

Front

What is the sum of angles in a triangle?

Back

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