Intro to Similarities

Similarity

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What was the scale factor?

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What was the scale factor?

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x=

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y=

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y=

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EF =

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BC =

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BC =

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Linear Scale Factor is

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Area Scale Factor is ...

should be cm²

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Area of large star?

Multiple Choice

When going from the ratio of perimeters to the ratio of areas, you...

• square it.

• cube it.

• square root it.

• cube root it.

Multiple Choice

When going from the ratio of perimeters to the ratio of areas, you...

• square it.

• cube it.

• square root it.

• cube root it.

Multiple Choice

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

• x = 9

• x = 28

• x = 7

• x = 63

Multiple Choice

Find the area of the larger triangle

• 17

• 18

• 19

• 20

Multiple Choice

Find the area of the smaller shape

• 5

• 6

• 7

• 8

Multiple Choice

Find length x given the areas, be careful when working out the scale factor.

• 4

• 5

• 6

• 7

Multiple Choice

Consider the following similar solids. Find the volume of the larger solid.

• 82 cm cube

• 80 cm cube

• 89 cm cube

• 85 cm cube

Multiple Choice

Find the volume of the larger cone

• 40.34

• 40.5

• 40.6

• 40.15

Multiple Choice

Work out the missing length

• 7

• 9

• 8

• 6

Multiple Choice

The area of the smaller ticket is 7 cm², what is the area of the larger ticket?

• 21 cm²

• 18 cm²

• 63 cm²

• 189 cm²