7th Grade Quiz 5.5-5.8

Which rectangles are similar?

• 2 and 3

• 1 and 2

• 1 and 3

On the plans for a new house, the house is 18 inches wide by 20 inches long. If the house is actually going to be

27 feet wide, what will the actual length of the house be?

• 40.5 ft

• 25 ft

• 24.3 ft

• 30 ft

Tell whether the transformation is a dilation.

• no

• yes

Dilate the figure by a scale of 1.5. What are the vertices of the image?

• J'(1.5, 6) K'(9,6) L'(9, 1.5) M'(1.5,1.5)

• J'(-1.5, -6) K'(-9,-6) L'(-9, -1.5) M'(-1.5,-1.5)

• J'(6, 1.5) K'(6,9) L'(1.5, 9) M'(1.5,1.5)

• J'(1.5, 6) K'(9,6) L'(6, 1) M'(1,1)

• 30 ft

• 50 ft

• 60 ft

• 63 ft

Juan has a maple tree and a pine tree in his backyard. He knows that the pine tree is 5 feet tall. On a sunny day, the shadow of the pine tree is 3 feet long while the maple's shadow is 13 feet long. What is the height of the maple tree. Round your answer to the nearest tenth.

• 7.8 ft

• 21.7 ft

• 22.7 ft

• 1.2 ft

The height of tower on a scale drawing is 18 cm. The scale is 2 cm:19 m. What is the actual height of the tower?

• 342 m

• 171 m

• 684 m

• 36 m

Under a 1000:1 microscope, a cell appears to have a length of 32 mm. What is the actual length of the cell?

• 0.32 mm

• 0.0032 mm

• 3.2 mm

• 0.032 mm