Mathematics

Find the values of the unknown x and y in the following diagram.


SOLUTION
Vertically opposite angles are equal
$$\therefore y = 90^o$$
sum of internal angles of a $$\Delta le$$ is $$180^o$$
$$x + x+y =  180^o$$
$$2x +90^o = 180^o$$
$$2x = 90^o$$
$$\therefore x = 45^o$$


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