Question

in the given figure triangle ABC is an isosceles triangle. with Ac =bc find the value of x
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Answer 1

Given : ∆ABC is an isosceles triangle with AC=BC  

To Find : value of x

Solution:

AC = BC

Angles opposite to Equal sides are Equal

∠B=  ∠A

=> ∠B = 70°

x = ∠A  + ∠B   ( Exterior angle = Sum of opposite interior angles)

=> x =  70° + 70°

=> x = 140°  

value of x.​  = 140°

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