Understanding similarity

True or False: All angles in similar figures are congruent.

• True

• False

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CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

In similar figures, the lengths of corresponding sides are proportional.

• Always true

• Sometimes true

• Never true

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CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

Are these figures similar?

• Yes
• No

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CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

CCSS.HSG.SRT.B.5

Which side corresponds to FG?

• AB

• AD

• DC

• BC

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CCSS.8.G.A.2

CCSS.8.G.A.4

This is an example of.....?

• congruent shapes

• 60^o shapes

• acute angles

• similar shapes

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CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

CCSS.HSG.SRT.B.5

CCSS.HSG.SRT.C.6

What symbol is used to show that two figures are similar?

• ≅

• ≡

• =

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CCSS.HSG.SRT.A.2

When figures are similar, their corresponding sides are__________________.

• congruent
• proportional
• invisible

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CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

True or False: All 30-60-90 triangles are similar.

• True

• False

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CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

CCSS.HSG.SRT.C.6

The ratio of the lengths of two corresponding sides of two similar polygons is called the _______ .

• equivalency

• congruency

• similarity

• scale factor

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CCSS.HSG.SRT.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

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CCSS.HSG.SRT.A.2