Similar Triangles, Polygons, and Dilations

What are the coordinates of the pre-image B if the image is located at B' (-8, 4) after a dilation with a center at the origin with a scale factor of 2.

• (0, 0)

• (-4,2)

• (-16,8)

• unable to determine

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½
• ¼
• 4
• 2

The two polygons are similar. If 6 corresponds to 4, what is the value of x?

• 1

• 1.8

• 2

• 3.5

Find the missing side if you know the figures are similar and have the same orientation.

• x = 9

• x = 28

• x = 7

• x = 63

What is the scale factor from MNOP to ABCD?

• 2:3

• 1:2

• 3:2

• 2:1

Which triangle is similar to the above triangle ?

• A
• B
• C
• D

State the postulate that proves these triangles are similar and complete the similarity statement.

• SSS

• SAS

• ΔFGH

• ΔGFH

State the postulate that proves these triangles are similar and complete the similarity statement.

• AA, ΔTVU

• AA, ΔTUV

• SAS, ΔVUT

• Not similar

State the postulate that proves these triangles are similar and complete the similarity statement.

• SSS, ΔVML

• SSS, ΔVLM

• SAS, ΔVML

• SAS, ΔVLM

Are the triangles similar?

• Yes
• No