from tkinter import *
 
c = Canvas(width=300, height=120, bg='green')
c.pack()
oval = c.create_oval      (10, 10, 80, 110, fill="orange", outline="red")
c.create_rectangle         (100, 10, 180, 110, tag="rect", fill="brown",  outline="yellow")
trian = c.create_polygon(200, 10, 200, 110, 290, 60, fill='blue', outline="yellow")
 
def oval_func(event):
  c.delete(oval)
  c.create_text(40, 50, text="Овал",  fill="yellow")
def rect_func(event):
  c.delete("rect")
  c.create_text(130, 50, text="Прямокутник",  fill="white")
def triangle(event):
  c.delete(trian)
  c.create_text(240, 50, text="Трикутник",  fill="blue")
 
c.tag_bind(oval,  '<Button-1>', oval_func)
c.tag_bind("rect",'<Button-1>', rect_func)
c.tag_bind(trian, '<Button-1>', triangle)
 
mainloop()