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Why AA and SSA are no valid methods to prove triangles congruent?
Wiki User
∙ 11y ago
Because you need information about all three parts of the triangle, either the side or the angle opposite it, for each of the sides of a triangle.
In AA you are missing the third angle, you could have a triangle where both angles were the same but the height could be different giving you a taller or shorter triangle.
In SSA, the angle would be the one opposite the first side, so you have no information about the third side
Wiki User
∙ 11y ago
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