Question => In Isosceles Triangle , All angles are 60° , prove that it is a equilateral Triangle
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We have to prove that AC = BC and ∆ABC is isosceles. Construct a bisector CD which meets the side AB at right angles. Or ∆ABC is isosceles. ... The total sum of the interior angles of a triangle is 180 degrees, therefore, every angle of an equilateral triangle is 60 degrees.
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