Question

1. In AABC, AB = BC and B = 3 A, find A, B, C.​

Answer 1

Step-by-step explanation:

In △ABC, AB=AC, ∠A=55

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Since, AB=BC

∠C=∠A=55

Sum of angles = 180

∠A+∠B+∠C=180

55+∠B+55=180

∠B=70

∘

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Answer 2

Answer:

see the picture

Step-by-step explanation:

angle sum property of triangle is used.