Q. 1245.0( 2 Votes )

In Δ ABC, if <spa

Answer :

Given: A = C, and exterior angle ABX = 140°


Formula Used/Theory:-


Angle sum property


Sum of all angles of triangle is 180°


Exterior angle is equal to sum of interior opposite angles


If exterior angle ABX = 140°


That means exterior angle is opposite of B


ABX = A + C


140° = 2A


A = = 70°


C = 70°


By angle sum property


A + B + C = 180°


70° + B + 70° = 180°


B = 180° - 140° = 40°


Result:- The angles of triangle are 70°;70°;40°


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