Ratios for Similarity Triangles

Pick the correct Similarity Statement for the Triangles Shown.

• ΔABC ~ ΔXYZ

• ΔACB ~ ΔYZX

• ΔCAB ~ ΔZXY

• ΔABC ~ ΔZXY

Find the scale factor (common ratio) between the two triangles.

• 3/2

• 1

• 9/4

• 4/9

Which side is corresponding to 7?

• 15

• 18

• 21

• 5

Which side is corresponding to 18?

• 5

• 6

• 7

• 15

The triangles are similar by...

• SAS

• AA

• ASA

• SSS

Determine if the two figures are similar or not using common ratios.

• No, the ratios between corresponding sides are different.

• No, because the sides aren't equal.

• Yes, because all the ratios are 4 to 1

• Yes, because all the ratios are 8 to 1

Pick the correct Similarity Statement for the Triangles shown.

• ΔABC ~ ΔPRQ

• ΔABC ~ ΔPQR

• ΔCBA ~ ΔPRQ

• ΔACB ~ ΔQRP

Given that the two triangles are similar, which side is corresponding to PQ?

• EF

• DE

• DF

• FE

Given the two triangles are similar, which side is corresponding to PR?

• DE

• EF

• DF

• FD

What ratio would I use for the side 5 and its corresponding side?

• 15/5 = 3

• 21/5

• 18/5

• 7/5