Angle Definitions

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 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 right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is a straight angle?

Back

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

Front

What is the common endpoint of an angle called?

Back

The common endpoint of an angle is called the vertex.

Front

In angle notation, what does the vertex represent?

Back

In angle notation, the vertex is the point where the two rays meet.

Front

What is an angle bisector?

Back

An angle bisector is a ray that divides an angle into two equal parts.

Front

How do you classify an angle measuring 45 degrees?

Back

An angle measuring 45 degrees is classified as an acute angle.

Front

How do you classify an angle measuring 120 degrees?

Back

An angle measuring 120 degrees is classified as an obtuse angle.

Front

What is the measure of a right angle in degrees?

Back

The measure of a right angle is 90 degrees.