Types of Angles

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 an obtuse angle?

Back

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

Front

How can you identify an acute angle?

Back

An acute angle looks sharp and is smaller than a right angle.

Front

How can you identify a right angle?

Back

A right angle forms a perfect corner, like the corner of a square.

Front

How can you identify an obtuse angle?

Back

An obtuse angle looks wide and is larger than a right angle.

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.