Кликами нарисовать фигуру

import tkinter as tk
from tkinter import messagebox as mb
 
FONT = ('Arial', 30)
WIDTH, HEIGHT = 500, 500
root = tk.Tk()
label = tk.Label(root, text='', font=FONT, width=12, height=1, bg='pink')
label.pack(padx=20, pady=20)
canvas = tk.Canvas(root, width=WIDTH, height=HEIGHT, bg='#FFFFFF')
canvas.pack(padx=10, pady=10)
n = 0
name = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
def left_click_handler1(event):
    x_start, y_start = event.x, event.y
    canvas.create_oval(x_start - 5, y_start - 5, x_start + 5, y_start + 5, fill='yellow')
    canvas.create_text(x_start, y_start, text=name[n], anchor='se')
 
    def show_xy():
        label.config(text=f'x={x_start}, y={y_start}')
    show_xy()
 
 
    def left_click_handler2(event):
        global n
        n += 1
        x1, y1 = event.x, event.y
        canvas.create_oval(x1 - 5, y1 - 5, x1 + 5, y1 + 5, fill='yellow')
        canvas.create_text(x1, y1, text=name[n], anchor='se')
        def show_xy():
            label.config(text=f'x={x1}, y={y1}')
 
        show_xy()
 
        canvas.create_line((x_start, y_start), (x1, y1), fill='#ff0000', width=3)
 
 
        def left_click_handler3(event):
            global n
            n += 1
            x, y = event.x, event.y
            canvas.create_oval(x - 5, y - 5, x + 5, y + 5, fill='yellow')
            canvas.create_text(x, y, text=name[n], anchor='se')
            def show_xy():
                label.config(text=f'x={x}, y={y}')
 
            show_xy()
 
            canvas.create_line((x1, y1), (x, y), fill='#ff0000', width=3)
 
            def right_click_handler(event):
                canvas.create_line((x, y), (x_start, y_start), fill='#ff0000', width=3)
            pass
 
            canvas.bind('<Button-3>', right_click_handler)
 
        canvas.bind('<Button-1>', left_click_handler3)
 
    canvas.bind('<Button-1>', left_click_handler2)
 
canvas.bind('<Button-1>', left_click_handler1)
 
root.mainloop()

import tkinter as tk
 
def left_click_handler(event):
  global n, x, y, x_start, y_start
  if n > 25:
    return
  if n > 0:
    canvas.create_line((event.x, event.y), (x, y), fill='#ff0000', width=3)
  x, y = event.x, event.y
  if n == 0:
    x_start, y_start = x, y
  canvas.create_oval(x - 5, y - 5, x + 5, y + 5, fill='yellow')
  canvas.create_text(x, y, text=name[n], anchor='se')
  label.config(text=f'x={x}, y={y}')
  n += 1
 
def right_click_handler(event):
  if n > 1:
    canvas.create_line((x_start, y_start), (x, y), fill='#ff0000', width=3)
    canvas.unbind('<Button-1>')
    canvas.unbind('<Button-3>')
 
FONT = ('Arial', 30)
WIDTH, HEIGHT = 500, 500
root = tk.Tk()
label = tk.Label(root, text='', font=FONT, width=12, height=1, bg='pink')
label.pack(padx=20, pady=20)
canvas = tk.Canvas(root, width=WIDTH, height=HEIGHT, bg='#FFFFFF')
canvas.pack(padx=10, pady=10)
n = 0
name = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
x_start = 0
y_start = 0
x = 0
y = 0
canvas.bind('<Button-1>', left_click_handler)
canvas.bind('<Button-3>', right_click_handler)
root.mainloop()