practice04.py

"""
Write a Python program to create a class that represents a shape. 
Include methods to calculate its area and perimeter. Implement subclasses for different 
shapes like circle, triangle, and square.

"""
import math

class Shape:
    def area(self):
        raise NotImplementedError("Subclasses must implement this method")
    
    def perimeter(self):
        raise NotImplementedError("Subclasses must implement this method")
    
class Triangle(Shape):
    def __init__(self, side1, side2, side3):
        self.side1 = side1
        self.side2 = side2
        self.side3 = side3
        super().__init__()

    def area(self):
        s = (self.side1 + self.side2 + self.side3) / 2
        return (s * (s - self.side1) * (s - self.side2) * (s - self.side3)) ** 0.5
    
    def perimeter(self):
        return round(self.side1 + self.side2 + self.side3, 3)
    
class Circle(Shape):
    def __init__(self, radius):
        self.radius = radius
        super().__init__()

    def area(self):
        return round(3.141592 * self.radius ** 2, 3)
    
    def perimeter(self):
        return round(2 * 3.141592 * self.radius, 3)
    
class Square(Shape):
    def __init__(self, side):
        self.side = side
        super().__init__()

    def area(self):
        return round(self.side ** 2, 3)
    
    def perimeter(self):
        return round(4 * self.side, 3)
    
class Rectangle(Shape):
    def __init__(self, length, width):
        self.length = length
        self.width = width
        super().__init__()

    def area(self):
        return round(self.length * self.width, 3)
    
    def perimeter(self):
        return round(2 * (self.length + self.width), 3)
    
class RegularPolygon(Shape):
    def __init__(self, num_sides, side_length):
        self.num_sides = num_sides
        self.side_length = side_length
        super().__init__()

    def area(self):
        angle = math.pi / self.num_sides
        return round((self.num_sides * self.side_length ** 2) / (4 * math.tan(angle)), 3)
    
    def perimeter(self):
        return round(self.num_sides * self.side_length, 3)

print("Shape Calculations:_____________________________")
# triangle 
triangle1 = Triangle(3, 4, 5)
print("Triangle Area:", triangle1.area())
print("Triangle Perimeter:", triangle1.perimeter())

print("_______________________________________________")

# circle
circle1 = Circle(5)
print("Circle Area:", circle1.area())
print("Circle Perimeter:", circle1.perimeter())

print("_______________________________________________")

# square
square1 = Square(3)
print("Square Area:", square1.area())
print("Square Perimeter:", square1.perimeter())

print("_______________________________________________")

# rectangle
rectangle1 = Rectangle(4, 6)
print("Rectangle Area:", rectangle1.area())
print("Rectangle Perimeter:", rectangle1.perimeter())

print("_______________________________________________")

# octagon
octagon1 = RegularPolygon(8, 4)
print("Octagon Area:", octagon1.area())
print("Octagon Perimeter:", octagon1.perimeter())

print("_______________________________________________")