Course 1.10.2

from turtle import Turtle
import cmath

def draw_polygon(nsides, side_len):
    angle = 360 / nsides
    for loop in range(nsides):
        tina.forward(side_len)
        tina.right(angle)

def polygon_area(nsides, side_len):
    tanx = cmath.tan(3.142 / nsides)
    cotx = ( 1 / tanx )
    area = ( 0.25 * nsides * side_len * side_len * cotx).real
    return int(area)

def polygon_perim(nsides, side_len):
    return nsides * side_len


sides = int(input("How many sides for polygon ? "))
side_len = int(input("How long is each side ? "))

tina = Turtle()
draw_polygon(sides, side_len)
tina.penup()
tina.goto(0, 30)
tina.pendown()
tina.write("The area of polygon is {} ".format(polygon_area(sides, side_len)))
tina.penup()
tina.goto(0, 10)
tina.pendown()
tina.write("The perimeter of polygon is {}".format(polygon_perim(sides, side_len)))

tina.hideturtle()