Scale Factor from A to B Triangles

Dilation changes a shape's __________?

• Size

• Position

• Form

• Orientation

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

Click image to enlarge

• A

• B

• C

• D

If your SF=6/5, what type of dilation is it?

• enlargement

• reduction

If the scale factor is less than 1, the dilation is...

• an enlargement

• a translation

• a rotation

• a reduction

Triangle ABC has vertices A (-2, 2), B (2, 4) and C (3, -1).  What are the coordinates of A' after a dilation by a scale factor of 2.5?

• (-5, 5)

• (5, -5)

• (5, 10)

• (7.5, -2.5)

Did the image enlarge, reduce or none of the above?

• Enlarge

• Reduce

• None of the above

Triangle S and Triangle L are scaled copies of one another. What is the scale factor from L to S?

• 1/4

• 1/2

• 2/3

What is the scale factor from the original triangle to its copy?

• 1/2

• 1/3

• 1/4

• 1/5