Scale Factor Area Perimeter

If the scale factor is 5, how times larger will the area of the big square be compared to the smaller square?

• 5

• 20

• 25

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

• True

• False

The perimeter of the larger square is 2 times larger than the smaller square.

• True

• False

The area of the larger square is __________ times larger than the area of the smaller square.

• 1/2

• 1

• 2

• 4

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?

scale factor = _______

Mathematical Equivalence

ON

What is one way to determine how much the area would increase using a scale factor of 3?

• take the scale factor and square it to get 3x3=9

• add all of the sides together then multiply by 3

• multiply the area of the smaller rectangle by 3

Which of the statements correctly compares the perimeter of the 2 triangles?

• 12x2=24

• 5x2=10

• 12x3=36

Which of the following correctly compares the area of the 2 triangles?

• 12x2=24

• 6x2=12

• 6x4=24

How much did the angles increase in the scale copy?

• They are twice as large

• They are 4 times as large

• Angles do not change in scale copies