Question

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Answer 1

(1): AB=AC

i.e. ∠1=∠2(Isosceles triangle property)

∠1+∠2+∠A=180°

=> ∠2+∠2+50°=180°

=> 2∠2=180°-50°

=> 2∠2=130/2

=> ∠2=65°, ∠1=65°

i.e. ∠2+x=180°

=> 65°+x=180°

=> x=180°-65°

=> x=115°