如何在tkinter中删除多边形？

import tkinter as tk

def delete_polygon():
    canvas.delete(polygon)

root = tk.Tk()

canvas = tk.Canvas(root, width=400, height=400)
canvas.pack()

# 绘制多边形
points = [100, 100, 200, 50, 300, 100, 250, 200, 150, 200]
polygon = canvas.create_polygon(points, fill='red')

# 创建删除按钮
delete_button = tk.Button(root, text='删除多边形', command=delete_polygon)
delete_button.pack()

root.mainloop()