Question

∆ABC is isosceles with AB=BC. If angle B is 4 times the measure of angle A. Find the measure of all the angles of the triangle​

Answer 1

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Answer 2

Step-by-step explanation:

let angle A be x.

then ,angle C =angleA =x(we know the opposite angles of equal sides of a triangle are equal)

A/Q,

angle B=4 times angle A=4x

then,

x+x+4x=180°(sum of all angles of a triangle is 180°)

6x=180°

x=180°/6

x=30°

angle A= x=30°

angle B= 4x=4×30°=120°

angle C=x=30°