Measuring Angles

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is a right angle?

Back

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

Tags

CCSS.4.G.A.1

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Tags

CCSS.4.G.A.1

Front

What do we call two angles that add up to 180 degrees?

Back

Supplementary angles.

Tags

CCSS.7.G.B.5

Front

What do we call two angles that add up to 90 degrees?

Back

Complementary angles.

Tags

CCSS.7.G.B.5

Front

If one angle measures 45 degrees, what is the measure of its supplementary angle?

Back

135 degrees.

Tags

CCSS.7.G.B.5

Front

If one angle measures 30 degrees, what is the measure of its complementary angle?

Back

60 degrees.

Tags

CCSS.7.G.B.5

Front

What is the measure of a full rotation in degrees?

Back

360 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is the measure of a half rotation in degrees?

Back

180 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1