Changing Dimensions Proportionally

• 32

• 8

• 16

• 24

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

• doubles
• halved
• quadrupled
• forthed

When multiplying by a scale factor the perimeter will multiply by...

• The same scale factor
• The scale factor doubled
• The scale factor squared (to the power of 2)

When multiplying by a scale factor the area will multiply by...

• The same scale factor
• The scale factor doubled
• The scale factor squared (to the power of 2)

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 perimeter?

• 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

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

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

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

What happens to the area of a polygon if the dimensions are tripled?

• the area is tripled

• the area is multiplied by 6

• the area is divided by 3

• the area is multiplied by 9

If a rectangle has an area of 48 cm², what would be the area of a similar rectangle if the dimensions are doubled?

• 96 cm²

• 192 cm²

• 216 cm²

• 2304 cm²