Types of Angles

Front

What is an obtuse angle?

Back

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

Front

What is an acute angle?

Back

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

Front

What is a right angle?

Back

A right angle is an angle that is exactly 90°.

Front

What is a straight angle?

Back

A straight angle is an angle that is exactly 180°.

Front

What type of angle is formed by the corners of a square?

Back

The corners of a square form right angles.

Front

If two lines intersect and form a right angle, what is the measure of that angle?

Back

The measure of that angle is 90°.

Front

What type of angle is greater than a right angle?

Back

An obtuse angle is greater than a right angle.

Front

What type of angle is less than a straight angle?

Back

An acute angle is less than a straight angle.

Front

What do you call an angle that measures exactly 90°?

Back

An angle that measures exactly 90° is called a right angle.

Front

If angle A is 45°, what type of angle is it?

Back

Angle A is an acute angle.