Question

Can you find the sides and angles of an isosceles triangle with only the perimeter?

Answer 1

No, we can't.

By observing,
In a ∆
common sides are x & the uncommon one is y.
As we know,
Perimeter = x+x+y
Perimeter = 2x+y

Here, we are getting variable equation; so sides cannot be determined.

And if sides couldn't be, then angles too cannot be determined.