Scale Drawings With Perimeter

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

The two rectangles are scale drawings. What is the measurement of x?

• 21

• 1.25

• 20

• 4

Find the perimeter of the large triangle.

• 24

• 36

• 12

• 54

The original perimeter of a rectangle is 30cm, if we enlarge it by a scale factor of 4 what is the new perimeter?

• 120

• 480

• 1920

Lena made a scale drawing of her yard, as shown.

According to the drawing, what is the perimeter of Lena’s yard in meters?

• 170 m

• 85 m

• 54 m

• 44 m

Jill's room is 12.5 feet long and 11.5 feet wide. She made a scale drawing of the room with a scale of 0.5 inch= 2 feet.  What is the PERIMETER of Jill's room in the drawing described?

• 12 inches

• 24 inches

• 48 inches

• 96 inches 

If 1 foot = 3 inches, what would be the perimeter of this rectangle in inches?

• 27in

• 42in

• 162in

• 1620in

Desmond measured a city park and made a scale drawing. The scale he used was 1 centimeter : 9 meters. The actual width of the soccer field is 54 meters. How wide is the field in the drawing?

Enter your answer WITHOUT units.

Mathematical Equivalence

ON

Which figures are scaled copies of the original A? Select all that apply.

• Figure 1

• Figure 2

• Figure 3

• Figure 4

The second H-shaped polygon is a scaled copy of the first. What is the scale factor from the original polygon to its smaller copy?

• 1/4

• 4

• 2

• 1/2