Q2 of 34 Page 170

In a triangle ABC, ∠B = ∠C = 45°, then the triangle is ______

Given that ∠B = ∠C = 45°


We know that the sum of the angles of a triangle is 180°.


⇒ ∠A + ∠B + ∠C = 180°


⇒ ∠A = 180° - 45° - 45°


⇒ ∠A = 90°


Hence, ∆ABC is a right triangle.

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