Apply AA, SAS, SSS to Prove Triangles Similar

To measure the distance across a pond, a surveyor locates points A, B, C, D, and E as shown.  Find the length of AB to the nearest meter.

• 10

• 12

• 15

• 18

The triangles are similar, solve for the question mark.

• 8

• 12.5

• 18

• 24

How do these triangles appear to be similar?
(Hint: Look for non-labeled parts!)

• AA

• SAS

• SSS

• Not Similar

Determine whether the triangles are similar.

• SSS~

• AA~

• SAS~

• not similar

What is the value of X?

• X=4

• X=6

• X=3

• X=2

Find y.

• 144

• 18

• 72

• 12

Are these two triangles similar? Which similarity criterion do you use to prove it?

• Yes, AA

• Yes, SAS

• Yes, SSS

• Not Similar

Are these two triangles similar? Which similarity criterion do you use to prove it?

• Yes, AA

• Yes, SAS

• Yes, SSS

• Not Similar

Are these two triangles similar? Which similarity criterion do you use to prove it?

• Yes, AA

• Yes, SAS

• Yes, SSS

• Not Similar

How do these triangles appear to be similar?

• AA

• SAS

• SSS

• Not Similar