Similarity Proof

The Side-Side-Side Similarity (SSS ~) Theorem states if the corresponding sides of two triangles are _____________________, then the triangles are _________________.

• proportional; similar

• similar, proportional

• congruent; congruent

• equal; equilateral

Determine the relationship between the triangles.

• SSS∼

• SAS∼

• AA∼

• Not similar

If two triangles are similar their angles are______.

• proportional

• congruent

• supplementary

• complementary

Complete each proportion.
CB / DM  =  AC / ?

• BM

• MA

• BC

• AD

What is the scale factor from ΔABC to ΔDEF?

• 1/2

• 7/3

• 2

• 10/3

Find the missing length indicated.

• 30

• 25

• 45

• 50

If two triangles are similar, the corresponding sides are ______________.

• equal

• congruent

• proportional

• none of these

What is the "reason" for step 2 of the proof?

• reflexive property

• proof

• SAS
  ≅ thrm

• given

Choose the correct scale factor:

• 2

• 3

• 1/3

• 1/2

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

• reduction

• enlargement

• scale factor

• center of dilation