Geometry Unit 8 Practice Test

What happens to the perimeter of a square if the sides are halved?

• doubles

• halved

• quadrupled

• forthed

Suppose the dimensions of a pentagon with an area of 12 are tripled Find the area of the new pentagon in square inches.

• 108
• 36
• 72
• 144

Tags

CCSS.HSG.SRT.A.1

Describe the effect of the change on the perimeter of the given figures. The base and height of a rectangle with base 4 ft and height 5 ft are both doubled.

• The perimeter is doubled.
• The perimeter is quadrupled.
• The perimeter is two more.
• The perimeter is four more.

A rectangle has a base 4 ft and height of 5 feet. If the figure dilated by a scale factor of 2, what will be true about its area?

• The area is doubled.
• The area is multiplied by 4.
• The area stays the same

Tags

CCSS.HSG.SRT.A.1

A figure is multiplied by the scale factor 1/4. What will be the change in perimeter?

• The perimeter will be 1/4 the original perimeter.
• The perimeter will be 1/8 the original perimeter.
• The perimeter will be 1/16 the original perimeter

Tags

CCSS.HSG.SRT.A.1

Coach Martin has a rectangular deck that covers 80 square feet of his backyard. If Coach Martin triples the length and width of his deck, what will be the effect on the new area?

• The area is tripled.

• The area is multiplied by one-third.

• The area is not changed.

• The area is multiplied by nine.

The height of the rectangle is tripled. Describe the effect on the area.

• The area is multiplied by 6
• The area is multiplied by 3
• The area is multiplied by 36
• The area is multiplied by 60

If the area of a circle is multiplied by 25, what happened to the radius?

• multiplied by 5

• multiplied by 2

• multiplied by 10

• multiplied by 1/5

Rectangle A (enlarged figure) has an area of 180 square cm and Rectangle B (original image) has an area of 20 square cm. The two rectangles are similar. What is the scale factor of their perimeters?

• 9

• 3

• 2

• 1

What is the line segment called that extends from the center of a polygon to the midpoint of a side?

• apothem

• radius

• permimeter

• area