Respuesta :

angle A and B would be identical

a triangle is 180 degrees

180 - 40 = 140

140 /2 = 70

angle a and b are 70 degrees
It is an isosceles triangle, so
∠a = ∠b

180 - 40 = 140
140 ÷ 2 = 70° 

∠a = 70°
∠b = 70°

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Answer: ∠A = 70° , ∠B = 70°
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