Question

12.
In given figure, ABC, if AB = AC, then the value of x is

a) 80°
b) 100°
c) 130°
d) 120°​

Answer 1

Answer:

80°

Step-by-step explanation:

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Answer 2

Answer:

C-130°

Step-by-step explanation:

ABC is a triangle

and A=80°

ab=ac

so, the opposite angles of sides AB and AC are equal

angle B + angle C =100°

X+x =100°

2x=100°

X=100°/2

X=50°

AC is a straight line

so, one angle is 50° then

180-50=130°

hence angle C =130°