Question

Any example would help but how would you find a value of x in an isoseles triangle

Answer 1

That would depend on where the 'x' was posted and what other information might be available.

Answer 2

In isosceles triangle we knowt that 2 sides r equal..
and the sum is 180

Answer 3

Yes, that is a rational definition of an isosceles triangle. Unfortunately, there is little additional inforamtino. Can you provide the EXACT problem statement?