如何使用python turtle 画一个等边三角形答:-*- coding: utf-8 -*- import numpy as np import matplotlib.pyplot as plt fig, ax = plt.subplots()x=np.linspace(-10,10,1000)y=np.linspace(-10,10,1000)X,Y = np.meshgrid(x,y)Z=X**2 +(Y-1.5*X**(2/3))**2-1 ax.contour(-1*X,Y,Z,[1,5,10,15,20,25,...