1.

In a triangle ABC, if AB=BC and angle B=70 degree, find A​

Answer»

Answer:

Step-by-step explanation:

SINCE, AB=BC

angle A = angle C

let angle A = x

so, angle C is also EQUAL to x

angle A + angle B + angle C = 180 degree

2X + 70 = 180 degree

x = (180-70)/2

x = 55 degree


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