Question

ABC is an isosceles right triangle , right - angled at C . Prove that AB2 =2AB2

Answer 1

given,AC=BC
          right angle is at C. by pythigaras theorem
                  AB²=AC²+CB²
                 AB²=AC²+AC²
                     AB²=2CA²
                          HENCE PROVED 
                

Answer 2

HEY MATE!!!

Given :- AC=BC because ABC is an isosceles triangle

    right angled is at C. by Pythagoras theorem

     Step 1. AB²=AC²+CB²

      Step 2.  AB²=AC²+AC²

      Step 3   AB²=2CA²