Similar Triangle Unknown Length

Complete each proportion.
AB / BM  =  ? / CD

• BC

• AC

• MD

• MC

Determine if the triangles are similar. Justify.

• Yes, by SSS.

• Yes, by SAS. Scale Factor is 1:2.

• Yes, by SAS. Scale Factor is 3:1.

• No, not similar.

Choose the similarity statement for the triangles.

• ΔMNL ∼ ΔOPQ

• ΔNOM ∼ ΔPQL

• ΔLMN ∼ ΔPQO

• ΔMLN ∼ ΔPQO

Find the value of x.

• 6.92

• 18.67

• 2.625

• 13.71

Solve for x.

• 3

• 6

• 8

• 9

Triangle SQR is similar to triangle SPT. Which segment corresponds to segment QR?

• SP

• ST

• PR

• PT

Which of the following is NOT true about similar figures?

• Similar figures always have the same shape.

• Similar figures always have the same size.

• Similar figures always have corresponding angles that are equal.

• Similar figures always have corresponding sides that are proportional.

Are these figures similar?

• yes

• no

Tell whether the triangles are similar. Explain.

• Yes because it looks like it

• Yes because 81 + 48 + 51 = 180

• No because 81 + 48 + 51 =/= 180

• Def not

Tell whether the triangles are similar. Explain.

• Yes because why not

• No because x = 107

• Yes because the triangles have at least two congruent angles.

• Nah