


In equilateral triangle, length of all sides are equal.
Let length of each side = a
Then area of equilateral triangle = (√3/4)*(length of the side)2
= (√3/4)*(a)2
Now in isosceles triangle only two sides are equal.
Let length of equal sides are a and length of third side is b
So Then area of isosceles triangle = (1/2)*b*h
