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प्रश्न
Mark the correct alternative in each of the following:
If all the three angles of a triangle are equal, then each one of them is equal to
विकल्प
90°
45°
60°
30°
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उत्तर
In a given ΔABC we are given that the three angles are equal. So, ∠A = ∠B = ∠C
According to the angle sum property of a triangle, in ΔABC
∠A + ∠B + ∠C = 180°
3∠A = 180°
∠A = 60°
∠A = ∠B = ∠C = 60°
Therefore, all the three angles of the triangle are equal to 60°
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