Answer:
Here,
given, angle B = 80 degree
in ABC triangle, AB = AC
that means angle B = angle C
so angle C must be 80 degree
Step-by-step explanation:
I guess, the options are wrong
or,
may the question asked for angle angle A
which will be = 180- (80+80) = 180 - 160 = 20 degree (option a)
