Scale Copies and Area

Which figure is a scaled copy of A?

• B

• C

• D

What is the area of this circle?

• 201.06

• 50.27

• 123.12

• 94.43

The perimeter of the square increased by a scale of 5.

• True

• False

What is the scale factor from ΔABC to ΔDEF?

• 1/2

• 7/3

• 2

• 10/3

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

scale factor = _______

Mathematical Equivalence

ON

What is the scale factor from the original triangle to its copy?

• 1/2

• 1/3

• 1/4

• 1/5

What is the scale factor?

• 4

• 25

• 5

• 6

Identify the side length in Figure 1 that corresponds to the side length MQ in figure 2.

• BC

• AE

• CD

• DE

Is Figure B a scaled copy of Figure A?

• Yes

• No

If the scale factor is 4, what is the measurement of slide length x?

• 21

• 1.25

• 20