Proportional Scale Factor Area Perimeter

Which proportion must be true?

• F

• G

• H

• J

Which proportion must be true?

• A

• B

• C

• D

What is the scale factor from triangle ABC to triangle DEF?

• 1/2

• 7/3

• 2

• 10/3

What is the scale factor from the large triangle to the small triangle?

• 1/2

• 2/3

• 3/4

• 2

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

Mathematical Equivalence

ON

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

Mathematical Equivalence

ON

A square is dilated by a scale factor of 4.3. Which statement is true?

• The perimeter of the new square will be 18.49 times the perimeter of the old square.

• The perimeter of the new square will be 3 times the perimeter of the old square.

• The area of the new square will be 4.3 times the area of the old square.

• The area of the new square will be 18.49 times the area of the old square.

A triangle is dilated by a scale factor of 2. If the original perimeter was 24, what will be the new area?

• 24

• 2

• 12

• 48

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

• reduction

• enlargement

• scale

• not proportional

Solve for X

• X = 36

• X = 18

• X = 16

• X = 216