Types of angles

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 the measurement range for an obtuse angle?

Back

An obtuse angle measures between 90 degrees and 180 degrees.

Front

What is the measurement range for an acute angle?

Back

An acute angle measures between 0 degrees and 90 degrees.

Front

What is the sum of angles in a triangle?

Back

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

Front

What type of angle is 35 degrees?

Back

35 degrees is an acute angle.

Front

What type of angle is 120 degrees?

Back

120 degrees is an obtuse angle.

Front

How can you identify a right angle visually?

Back

A right angle can be identified visually by the presence of a square corner or a 90-degree angle marker.

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.