Similar Figures and Ratio

The __________ is the ratio of a length of the image to the corresponding length on the original figure.

• reduction

• enlargement

• scale factor

• center of dilation

Tags

CCSS.7.G.A.1

Complete each proportion.
CB / DM  =  AC / ?

• BM

• MA

• BC

• AD

Tags

CCSS.HSG.SRT.B.4

Two triangles are similar, and the ratio of each pair of corresponding sides is 2:1. Which statement regarding the two triangles is not true?

• Their areas have a ratio of 4:1

• Their altitudes have a ratio of 2:1

• Their perimeters have a ratio of 2:1

• Their corresponding angles have a ratio of 2:1

Find the ratio (blue to red) of the area.

• 4/7

• 7/4

• 49/16

• 16/49

Tags

CCSS.7.G.A.1

Tell whether the two figures are similar. Explain your reasoning.

• Yes, similar because they are the same shape and side lengths are proportional.

• No, not similar because they are the same shape, but side lengths are not proportional.

• Yes, same shape

• No, different sizes

Tags

CCSS.HSG.SRT.A.2

As it relates to geometry, what does it mean for figures to be similar?

• corresponding sides are proportional and corresponding angles are congruent

• corresponding sides and angles are congruent

• angles are similar, and side lengths are the same, producing a figure that looks very close to another one.

• neither sides or angles are congruent

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Are the two figures similar? (check all ratios to see if they are equal)

• yes

• no

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

This two figures are...

• congruent and similar

• similar, but not congruent

• congruent, but not similar

• Neither congruent nor similar

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Tell whether the two figures are congruent or similar.

• Congruent, because their sides are the same.

• Congruent, because their sides are proportional.

• Similar, because their sides are the same.

• Similar, because their sides are proportional.

• They are not congruent or similar.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Are the two figures similar?

• yes

• no

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6