Angles

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What is the vertex of an angle?

Back

The vertex is the point where the two rays of an angle meet.

Front

What is an acute angle?

Back

An acute angle measures less than 90 degrees.

Front

What is a right angle?

Back

A right angle measures exactly 90 degrees.

Front

What is an obtuse angle?

Back

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

Front

What is a straight angle?

Back

A straight angle measures exactly 180 degrees.

Front

What is a full circle?

Back

A full circle measures 360 degrees.

Front

How many degrees are in a right angle?

Back

A right angle measures 90 degrees.

Front

How many degrees are in an obtuse angle?

Back

An obtuse angle measures more than 90 degrees and less than 180 degrees.

Front

How many degrees are in an acute angle?

Back

An acute angle measures less than 90 degrees.