Mathematics

In the Fig; we have $$\angle ABC=\angle ACB, \angle 3=\angle 4$$. Then:


ANSWER

$$\angle 1 = \angle 2$$


SOLUTION
Given, $$\angle ABC =\angle ACB$$, $$\angle 3 = \angle 4$$
Now, 
$$\angle ABC = \angle ACB$$
$$\angle 1 + \angle 4 = \angle 2 + \angle 3$$
But, $$\angle 3 = \angle 4$$ (Given)
Thus, $$\angle 1 = \angle 2$$
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