SOLUTION: Which is not a theorem or postulate used to prove triangles similar? SSS SAS AA SSA

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Question 851206: Which is not a theorem or postulate used to prove triangles similar?

SSS
SAS
AA
SSA
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
SSS - Side Side Side Postulate
SAS - Side Angle Side postulate
AA - AA Similarity Theorem
SSA - none. The other ones are Angle Side Angle Postulate and Angle Angle Side Postulate
.
Excellent (simple) explanation of these at http://www.mathwarehouse.com/geometry/congruent_triangles/