Classify Angle Types

Front

What is an obtuse angle?

Back

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

Front

What is an acute angle?

Back

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

Front

What is a right angle?

Back

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

Front

What is another name for a right angle?

Back

90 degree angle.

Front

How do you identify an obtuse angle visually?

Back

An obtuse angle appears wider than a right angle and is often drawn with a larger opening.

Front

How do you identify an acute angle visually?

Back

An acute angle appears sharper than a right angle and is often drawn with a smaller opening.

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 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.