Respuesta :

sides = ([])

i = 0

while i < 3:

   side = float(input("Enter the length of one side: "))

   sides.append(side)

   i += 1

if sides.count(sides[0]) == 3:

   print("Your triangle is an equilateral triangle.")

else:

   print("Your triangle is not an equilateral triangle.")

I hope this helps!