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

What is a straight angle?

Back

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

Front

How many degrees are in a full circle?

Back

A full circle has 360 degrees.

Front

What type of angle is formed by the hands of a clock at 3:00?

Back

The angle formed is a right angle.

Front

What type of angle is formed by the hands of a clock at 10:10?

Back

The angle formed is an obtuse angle.

Front

What type of angle is formed by the hands of a clock at 1:00?

Back

The angle formed is an acute angle.

Front

If two lines intersect and form a right angle, what is the relationship between those lines?

Back

The lines are perpendicular to each other.

Front

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

Back

A right angle.