Identifying Types of Angles

Front

What are complementary angles?

Back

Two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles whose measures add up to 180 degrees.

Front

What are vertical angles?

Back

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

Front

What are adjacent angles?

Back

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

Front

What is the sum of the measures of two complementary angles?

Back

90 degrees.

Front

What is the sum of the measures of two supplementary angles?

Back

180 degrees.

Front

If two angles are vertical angles, what can be said about their measures?

Back

They are equal.

Front

If ∠1 and ∠2 are supplementary, what is the relationship between their measures?

Back

The sum of their measures is 180 degrees.

Front

If ∠1 and ∠2 are complementary, what is the relationship between their measures?

Back

The sum of their measures is 90 degrees.

Front

What type of angles are formed when two lines intersect?

Back

Vertical angles and adjacent angles.