# Kelvin Ly
# 10/16/12
# Draws a properly-sided spiral triangle.
import turtle

def main():
	side = 10
	n = int(input("How many sides do you want on your spiral triangle?\n"))
	
	turtle.pendown()
	for i in range(n):
		turtle.forward(side)
		turtle.right(120)	#Key difference here. Geometry!

		side = side + 10

main()

