Question

14. If one angle of a triangle is equal to the sum of the other two angles, then the triangle is *


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Answer 1

Answer:

if one angle of a triangle is equal to the sum of the other two angles, then show that triangle is right angled.

ANSWER

In △ABC,

∠A=∠B+∠C

Now, sum of angles = 180

∠A+∠B+∠C=180

∠A+∠A=180

∠A=90

∘

Thus, △ABC, is a right angled