Scale Factor Quiz 2

Scale factor is the number that you _______ to calculate the new dimension.

• add

• subtract

• multiply

• divide

If the linear scale factor is 4, what is the area scale factor?

• 2

• 8

• 16

• 25

Tags

CCSS.6.G.A.1

A scale factor of 1/2 is used to change the dimensions of a rectangle with a length of 7 centimeters and a width of 5 centimeters. What is the perimeter of the resulting rectangle?

• 12

• 35

• 24

• 38

Tags

CCSS.7.G.A.1

Which of the following are 2-dimensional measurements? Select all that apply.

• Length of rope

• Volume of a cylinder

• Area of a square

• Area of a triangle

• Perimeter of a rectangle

Tags

CCSS.HSG.GPE.B.7

CCSS.HSG.SRT.D.9

A scale factor of 2 is used to enlarge the dimensions of a square. What is the effect of this change on the area of the square?

• The area will be half as big.

• The area will be twice as large.

• The area will be 4 times larger.

• The area will be 8 times larger.

• The area will not change.

Tags

CCSS.7.G.A.1

CCSS.7.G.B.6

The dimensions of a rectangular photo are 3.5 in. x 5 in. The dimensions of the photo are enlarged by a scale factor of 2.5. What is the perimeter of the new photo?

• 17.7 in²

• 8.75 in. X 12.5 in.

• 42.5 in.

• There is not enough information.

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Two shapes are ___________ if their corresponding sides are proportional and their corresponding angles are congruent.

• Similar

• Ratio

• Scale factor

• Not similar

Angle Angle Criterion for Triangles: If two angles of one triangle are congruent to two angles of another triangle, then the two triangles are ___________________.

• similar

• cousins

• triangles

• 360 degrees

These two triangles are

• similar

• not similar

• not enough information

Stefano holds up an 8-inch pencil 32 inches from his eye. The pencil fills the image of a sculpture that is 40 feet away. How tall is the sculpture?

• 10

• 8

• 22

• 14

• 16