How to plot triangle ,square or any polygon shape in Python Matplotlib

Code

from matplotlib.pyplot import *
from numpy import *
n = eval(input('enter the no. of sides greater than 2: '))
t = arange(0,360+(360/(n)),360/(n))
#t = arange(0,360,360/n)
x = 10*sin(radians(t))
y=10*cos(radians(t))
plot(x,y)
axis('equal')

Let's try to understand how this code work

• First we have import maptlotlib and numpy module
• Then we ask enter the no. of sides you want to plot 
  Note: It must be greater than 2
• t basically define the no. of point for the graph
• then we use our circle equation to plot
  Note : Please watch how to plot a circle to understand it much better
• Axis equal to make sure our graph looks correct

Interactive Coding in Python

import numpy as np

import matplotlib.pyplot as plt

from ipywidgets import interactive

def sides(n):

    #n = eval(input('enter the no. of sides greater than 2: '))

    t = np.arange(0,360+(360/(n)),360/(n))

   # t = np.arange(0,360,360/n)

    x = 10*np.sin(np.radians(t))

    y=10*np.cos(np.radians(t))

    plt.plot(x,y)

    plt.axis('equal')

interactive_plot = interactive(sides , n= (3,20))

interactive_plot