Scale factors and dilation

Dilations ALWAYS increase the length of line segments.

• True

• False

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True
• False

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True
• False

In a dilation what mathematical operation is used with the scale factor?

• addition 
• subtraction 
• multiplication 
• division 

If the Scale Factor is ½ , the copy will be a(n) __________________ .

• Reduction
• Enlargement

If the Scale Factor is 5, the copy will be a(n) _________________ .

• Reduction
• Enlargement

How is Figure F reduced to Figure B?

• Multiply each side by 1/2

• Multiply each side by 1/3

• Multiply each side by 1/4

• Multiply each side by 1/5

Which scale factor will result in a dilation that is an enlargement?

• 2.5

• 1/2

• 0.4

• 1

Which scale factor will result in a dilation that is a reduction?

• 5/4

• 0.2

• -3

• 7

What would happen to a shape that was multiplied by a scale factor of 1?

• The shape would get bigger.

• The shape would get smaller.

• The shape would stay the same size.

• The shape would disappear.