Question

1. In the figure along side AB AC
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Answer 1

Answer:

Here's your answer mate

AB = AC it means it is an isosceles triangle.

Let's take interior angle 1and 2

So as it an isosceles triangle

Ang 1= Ang 2

Sum of 2 interior angle = exterior angle.

Ang 1+ Ang 2= x Ang 2 + Ang 1= y

1+2=x & 2+1=y

x=y

Hence proved,