Naming Angles/Complementary & Supplementary Angles

Front

What are complementary angles?

Back

Angles that add up to 90°.

Tags

CCSS.7.G.B.5

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Tags

CCSS.7.G.B.5

Front

What is the measure of a right angle?

Back

90°.

Tags

CCSS.4.G.A.1

Front

What is the measure of a straight angle?

Back

180°.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is an acute angle?

Back

An angle that is less than 90°.

Tags

CCSS.4.G.A.1

Front

What is an obtuse angle?

Back

An angle that is greater than 90° but less than 180°.

Tags

CCSS.4.G.A.1

Front

How do you name an angle using points?

Back

Use three points, with the vertex point in the middle, e.g., ∠ABC.

Front

If one angle measures 70°, what is the measure of its complementary angle?

Back

20°.

Tags

CCSS.7.G.B.5

Front

If one angle measures 156°, what is the measure of its supplementary angle?

Back

24°.

Tags

CCSS.7.G.B.5

Front

What is the symbol for an angle?

Back

∠.