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In the Δ PQR the angle included by the sides PQ and PR is

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In a triangle ABC, ∠A = 40^o and AB = AC, then ABC is _____ triangle.

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In the triangle ABC, when ∠A = 90^o the hypotenuse is ______

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In the figure, the value of x° is_______

In the figure, ABC is a triangle in which AB = AC. Find x° and y°.