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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