Angle Pair Relationships

Front

What are Complementary Angles?

Back

Two angles that add up to 90 degrees.

Front

What are Vertical Angles?

Back

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

Front

What are Linear Pairs?

Back

A pair of adjacent angles formed when two lines intersect; they are supplementary.

Front

What are Supplementary Angles?

Back

Two angles that add up to 180 degrees.

Front

What are Corresponding Angles?

Back

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

Front

What are Alternate Interior Angles?

Back

Angles that are on opposite sides of the transversal and inside the two lines; they are equal.

Front

What are Alternate Exterior Angles?

Back

Angles that are on opposite sides of the transversal and outside the two lines; they are equal.

Front

What are Same Side Interior Angles?

Back

Angles that are on the same side of the transversal and inside the two lines; they are supplementary.

Front

What are Adjacent Angles?

Back

Two angles that share a common side and vertex but do not overlap.

Front

What is the relationship between Vertical Angles?

Back

Vertical angles are always equal.