Identifying 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

What is a straight angle?

Back

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

Front

How can you identify an acute angle?

Back

An acute angle can be identified as being sharp and smaller than a right angle.

Front

How can you identify a right angle?

Back

A right angle can be identified by its square corner, often marked with a small square.

Front

How can you identify an obtuse angle?

Back

An obtuse angle can be identified as being wider than a right angle.

Front

How can you identify a straight angle?

Back

A straight angle can be identified as a straight line, measuring 180 degrees.

Front

What is the sum of angles in a triangle?

Back

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

Front

What is a vertical angle?

Back

Vertical angles are the angles opposite each other when two lines intersect, and they are always equal.