Question

10.In triangle ABC, if AB=BC and ∠B = 70, ∠A will be
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Answer 1

Answer:

70 degree because by the information we can say that it is isosceles triangle

Answer 2

Answer:

answer is 55 degrees

Step-by-step explanation:

firstly we get to know that triangle is isoceles triangle with ab=bc

therefore a+b+c=180.....(sum of angle of triangle)

since it is isoceles therefore angle a and angle c is same

therefore a +a +b =180

2a+b=180

a=55

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