Question

How to find other two equal sides of a triangle when they have given a side and perimeter?

Answer 1

if it is a isoceles triangle then two sides are same let these two sides =x
we know that Peri of a triangle=sum of all the sides
Peri=ist side +2nd side+3rd side
Peri=ist side+x+x
peri-ist side=2x
peri-ist side/2=x