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in Triangles by (37.8k points)
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In ΔABC’, ∠A = 30°, ∠B = 40° and ∠C = 110° 

In ΔPQR, ∠P = 30°, ∠Q = 40°and ∠R = 110°

A student says that ΔABC ≅ ΔPQR by AAA congruence criterion. 

Is he justified? Why or why not?

1 Answer

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The student Is not correct. AAA is not a congruency criteria. Triangles with same corresponding angles can have different sizes.

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