Similarity Criteria

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

• AA

• SAS

• SSS

• Not Similar

What is the similarity statement for the triangle pair?

• ΔXYZ~ΔNEW

• ΔXZY~ΔNWE

• ΔZYX~ΔENW

• ΔYZX~ΔNWE

Calculate the value of the scale factor between the 2 triangles

• 2.5

• 3

• 3.5

• 4

The two right triangles below are similar. What is x, the missing side length in triangle DEF? 

• 3.75

• 9.75

• 10

• 12

State if the triangles in each pair are similar. If so, state how you know they are similar.

• Yes, AA Similarity

• Yes, SSS Similarity

• Yes, SAS Similarity

• Not Similar

State if the triangles in each pair are similar. If so, state how you know they are similar.

• Yes, AA Similarity

• Yes, SSS Similarity

• Yes, SAS Similarity

• Not Similar

State if the triangles in each pair are similar. If so, state how you know they are similar.

• Yes, AA Similarity

• Yes, SSS Similarity

• Yes, SAS Similarity

• Not Similar

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3

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

• equal

• congruent

• proportional

• none of these

Check whether pairs of triangles in the given figure are similar or not. If yes, identify the similarity criterion used by you for answering the question and also identify the pairs of similar triangles in the symbolic form.

• Not Similar

• Similar - SSS Criteria - ΔLMP∼ΔDEF

• Similar - SSS Criteria - ΔMLP∼ΔDEF

• Similar - AA Criteria - ΔLMP∼ΔFED