Dilations Perimeter Area

Two objects that are the same shape but NOT the same size are _______.

• Congruent

• Vertical

• Similar

• Complementary

If two figures are similar, the corresponding sides are ______________.

• equal

• congruent

• proportional

• none of these

A triangle has an area of P square units. The triangle is dilated by a scale factor of 3.

Which expression could represent the area of the new shape?

• 9P units

• 3P units

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8.10.D

A triangle has a perimeter of 10 centimeters. If each dimension of the triangle is dilated by a scale factor of 2 to create a new triangle, what is the perimeter of the new triangle?

• 40 centimeters

• 80 centimeters

• 20 centimeters

• 30 centimeters

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8.10.D

A dilation is which of the following: 

• An enlargement

• A reduction

• Either an enlargement or a reduction

• Neither an enlargement or a reduction

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8.10.D

A triangle has a perimeter of P units. The triangle is dilated by a scale factor of 1/2.

Which expression could represent the perimeter of the new shape?

• 2P units

• 4P units

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8.10.D

A rectangle is dilated by a scale factor of 3. What will be the resulting effect on the area?

• It will be dilated by scale factor of 3

• It will be dilated by a scale factor of 9

• There will be no effect on the area

• It will be dilated by 1/3

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8.10.D

A triangle has a perimeter of P units. The triangle is dilated by a scale factor of 2.

Which expression could represent the perimeter of the new shape?

• 2P units

• 4P units

Tags

8.10.D

Jane's garden is a 2 ft x 3 ft rectangle. If she increases it by a scale factor of 3, what is the new area of her garden?

• 72 square feet

• 18 square feet

• 36 square feet

• 54 square feet

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8.10.D

A rectangle is dilated by a scale factor of 2.

What happens to the area?

• doubles

• triples

• quadruples

• not enough information

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8.10.D