Basic Angles Vocabulary - 7th Grade

Front

What is an angle?

Back

An angle is formed by two rays with a common endpoint called the vertex.

Front

What is a vertex?

Back

A vertex is the common endpoint where two rays meet to form an angle.

Front

What are the types of angles based on their measure?

Back

Acute, right, obtuse, straight, reflex, and full angles.

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Front

What is an obtuse angle?

Back

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

Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.