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What is the sum of all the angles in any triangle?(a) 90°(b) 180°(c) 270°(d) 240°I had been asked this question at a job interview.The origin of the question is Quadrilaterals in division Quadrilaterals of Mathematics – Class 8

Answer»

Correct CHOICE is (b) 180°

Easy explanation: : As we know that the SUM of all the INTERIOR angles of any triangle is 180°. Sum of interior angles=(n-2)180°

Any triangles have THREE SIDES so n=3.

∴ Sum of interior angles=(3-2)180°

∴ Sum of interior angle=180°.



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