Question

if two angles of a triangle are 60 degree, each the triangle is equilateral ..... how the statement is true...​

Answer 1

Let the angle be x

60°+60°+x=180°

x=180°-120°=60°

As , all the angles of the triangle are equal. Then all the sides will also equal. So the triangle is equilateral triangle.

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Answer 2

Let third angle be x

60+60+x = 180 [anglesum property of triangle]
120+x = 180
x = 180-120
x = 60

As all angles of triangle are 60, thus the triangle is equilateral

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