Setting Up Proportions from Polygons

In this pair of figures sides are proportional and angles are congruent.

• Similar Figures

• Ratio

• Unit Rate

• Proportion

• Unit Price

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Polygons that are the same shape but different size.

• Similar Figures

• Ratio

• Unit Rate

• Indirect Measurement

• Proportion

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Solve for x. The two figures are similar.

• x = 6

• x = 9

• x = 7

• x = `0

Tags

CCSS.HSG.SRT.A.2

The pair of figures is similar. Find the missing side.

• x = 20

• x = 12

• x = 5

• x = 4

Tags

CCSS.HSG.SRT.A.2

Which proportion can be used to find 'x'?

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Tags

CCSS.HSG.SRT.A.2

Find the scale factor.

• 4:1

• 1:3

• 2:1

• 7:3

Tags

CCSS.7.G.A.1

Are the polygons similar?

• HGFE ~ NMLK

• KNML ~ FGHE

• No - because corresponding angles are not congruent

• No - because corresponding sides are not proportional

Tags

CCSS.HSG.SRT.A.2

The pair of figures is similar. Find the missing side.

• x = 10

• x = 4

• x = 2

• x = 5

Tags

CCSS.HSG.SRT.A.2