Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.

Front

What is an acute angle?

Back

An angle that measures less than 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 linear pair of angles?

Back

Two adjacent angles that form a straight line, summing to 180 degrees.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are equal.

Front

What are complementary angles?

Back

Two angles that sum to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that sum to 180 degrees.

Front

What is an adjacent angle?

Back

Two angles that share a common side and vertex.

Front

What is a corresponding angle?

Back

Angles that are in the same position on different parallel lines cut by a transversal.

Front

What is the definition of an angle?

Back

A figure formed by two rays, called the sides of the angle, sharing a common endpoint called the vertex.