Question

In triangle ABC AB is equals to BC and Angle B is equals to 80 degree find angle A
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Answer 1

Step-by-step explanation:

given: AB=BC

angle B=80 degree

solution : If AB=BC

therefore , angle A = angle C = x

angle A+ angle B + angle C = 180 degree( sum of all angle is equal )

x+ 80 + x = 180

2x = 180-80

2x = 100

x = 100/2

x = 50 degree

Done!!