Day 4: Angle Pairs

Front

What are adjacent angles?

Back

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

Front

Which angles are adjacent in the following: ∠AOD and ∠AOC?

Back

∠AOD and ∠AOC are adjacent angles.

Front

What are vertical angles?

Back

Vertical angles are angles that are opposite each other when two lines intersect.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal in measure.

Front

What are complementary angles?

Back

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

Front

What is the sum of complementary angles?

Back

Complementary angles always add up to 90°.

Front

What are supplementary angles?

Back

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

Front

What is the sum of supplementary angles?

Back

Supplementary angles always add up to 180°.

Front

If angle 1 is 70°, what is the measure of its complement?

Back

The measure of its complement is 20°.

Front

If angle 2 is 110°, what is the measure of its supplement?

Back

The measure of its supplement is 70°.