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?
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Solution
No, because the two triangles with equal corresponding angles need not be congruent. In such a correspondence, one of them can be an enlarged copy of the other.