Dilations with Measurement

A square with side lengths of 8ft is dilated by a scale factor of 1/2. The new ​perimeter ​will be​ (a)   of the original perimeter and will measure​ ​ ​ (b)   feet.

• 1/2

• 1/4

• 4

• 8

• 16

A square with side lengths of 8ft is dilated by a scale factor of 1/2. The new ​area​ will be​ (a)   of the original perimeter and will measure​ (b)   feet.

• 1/4

• 16

• 32

• 4

• 8

How is Figure F reduced to Figure B?

• Multiply each side by 1/2

• Multiply each side by 1/3

• Multiply each side by 1/4

• Multiply each side by 1/5

A scale factor greater than one creates ....

• reduction

• enlargement

• exact copy

• none of these

If the scale factor is less than one, the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

Which of the following is the algebraic representation for a dilation?

• (x, y) → (x, 3y)

• (x, y) → (3x, 3y)

• (x, y) → (x, y - 3)

• (x, y) → (.5x, .4y)

A dilation is given by the transformation (x, y) → (.75x, .75y). What type of dilation is this?

• enlargement

• it is not a dilation

• reduction

If your SF=6/5, what type of dilation is it?

• enlargement

• reduction

If a shape is dilated by a scale factor of 5, the perimeter will change by a scale factor of

• 5

• 10

• 25

• 1/5