Question

prove that sum of angle of triangle is 180 degree

Answer 1

let in a equilateral triangle
we know that sum of exterior angles of any polygon is 360 degree
so each exterior angle of the equilateral triangle is
$360 \div 3 = 120$
now if exterior angle is 120 then interior angle will be 60
so 60*3 is equal to 180

Answer 2

Answer:

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