Using Fractions to find the Measure of an Angle

Front

What is a fraction?

Back

A fraction represents a part of a whole, expressed as a numerator (top number) over a denominator (bottom number).

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What is the total measure of a circle in degrees?

Back

The total measure of a circle is 360 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

How do you find the measure of an angle that cuts off a fraction of a circle?

Back

Multiply the fraction by 360 degrees. For example, for 1/4 of a circle: 1/4 * 360 = 90 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is the measure of an angle that cuts off 1/2 of a circle?

Back

180 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is the measure of an angle that cuts off 1/8 of a circle?

Back

45 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is the measure of an angle that cuts off 1/6 of a circle?

Back

60 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is the measure of an angle that cuts off 2/9 of a circle?

Back

80 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is the measure of an angle that cuts off 1/9 of a circle?

Back

40 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

If an angle cuts off 1/3 of a circle, what is its measure?

Back

120 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

If an angle cuts off 3/4 of a circle, what is its measure?

Back

270 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1