(5/16/23) - Special Angle Pairs Review

Front

What are adjacent angles?

Back

Adjacent angles are angles that are next to each other and share a common vertex and side.

Front

What is the sum of complementary angles?

Back

The sum of complementary angles is 90°.

Front

What is an example of complementary angles?

Back

An example of complementary angles is ∠3 and ∠4, if their measures add up to 90°.

Front

What does it mean for two angles to be vertical?

Back

Two angles are vertical if they are opposite each other when two lines intersect.

Front

What is an example of vertical angles?

Back

If ∠1 and ∠4 are opposite angles formed by two intersecting lines, then ∠1 and ∠4 are vertical angles.

Front

What are adjacent angles to ∠1?

Back

Adjacent angles to ∠1 are angles that share a common side and vertex with ∠1.

Front

What is the relationship between complementary angles?

Back

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

Front

Can two angles be both complementary and adjacent?

Back

Yes, two angles can be both complementary and adjacent if they share a common side and their measures add up to 90°.

Front

What is the definition of a right angle?

Back

A right angle is an angle that measures exactly 90°.

Front

What is the relationship between supplementary angles?

Back

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