Dilations and Measurements

Choose the correct scale factor if blue is the new image.

• 2

• 3

• 1/3

• 1/2

Hello students! Today you will be working with Dilations, specifically Scale factor. For scale factor all you are going to do is figure out what one shape is multiplied by to make it bigger or smaller. If a shape gets Bigger it will be multiplied by a scale factor that is larger than 1 and smaller if the scale factor is less than 1. Reminder for you to get full points on this assignment what is the percentage you must get past?(answer in the box below)

A dilation can produce a smaller figure or a(n)______

• reduction

• enlargement

• scale factor

• center of dilation

Does the image show a dilation?

• Yes

• No

True of False: When you shrink a figure, you multiply by a fraction. 

• true

• false

Dilations are ________ but not congruent.

• Similar

• Flipped

• Rotated

• Congruent

If k=1.25 (k is scale factor), then a dilation will result in a(n)______

• reduction

• enlargement

• scale factor

• center of dilation

Enlargement or reduction?

• Reduction

• Enlargement 

If the scale factor is 5, the new figure will be a......

• Reduction

• Enlargement

If the scale factor is 1/2, the new figure will be a......

• Reduction

• Enlargement