Mathematics

Find the value of unknown x in the following diagram.


SOLUTION
Sum of interior angles of a $$\Delta $$ is $$180^o$$
$$\angle P + \angle Q + \angle R = 180^o$$
$$50^o + x + x = 180^o$$
$$2x = 180^o - 50^o$$
$$2x = 130^o$$
$$\therefore x = 65^o$$

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