绘制等边三角形
Python
import turtle as t
pen = t.Turtle()
pen.speed(5)
pen.color("red")
# 绘制等边三角形
for i in range(3): # 循环3次
pen.forward(100) # 前进100像素
pen.right(120) # 右转120度（外角）
t.done()
