Types of Angles

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common vertex and a common side but do not overlap.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are same side interior angles?

Back

Same side interior angles are pairs of angles on the same side of a transversal and inside the two lines it intersects.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles on opposite sides of a transversal and inside the two lines it intersects.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles on opposite sides of a transversal and outside the two lines it intersects.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on two different parallel lines cut by a transversal.

Front

What is a straight angle?

Back

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

Front

What is the relationship between same side interior angles when the lines are parallel?

Back

When the lines are parallel, same side interior angles are supplementary.

Front

What is the relationship between alternate interior angles when the lines are parallel?

Back

When the lines are parallel, alternate interior angles are congruent.