In ∆ABC, ∠A = 30° , ∠B = 40° and ∠C = 110°. In ∆ PQR, ∠P = 30° , ∠Q = 40° and ∠R = 110° . A student says that ∆ABC ≅ ∆PQR by AAA congruence criterion. Is he justified? Why or why not?

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.

Class 7 Maths Chapter 7 Exercise 7.2

for more answers vist to:
https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-1/