Question 184450
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If you have two triangles that have 2 congruent angles, then the third angles must be congruent because the angles of a triangle always sum to 180.  If you have three congruent angles, then the sides must be related with a common constant of proportionality and therefore are at least similar (congruent if the constant of proportionality is 1)



John
*[tex \Large e^{i \pi} + 1 = 0]
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