ПЗ - 1. Задание 6.

class Trapezoid:
    def __init__(self, a, b, c, d):
        self.b_base = self.finding_parties(a, d)
        self.t_base = self.finding_parties(b, c)
        self.l_side = self.finding_parties(a, b)
        self.r_side = self.finding_parties(c, d)

    def finding_parties(self, coord1, coord2):
        return ( (coord2[0]-coord1[0]) ** 2 + (coord2[1]-coord1[1]) ** 2 ) ** 0.5

    def examination(self):
        if self.l_side == self.r_side:
            return True
        else:
            return False

    def perimeter(self):
        return self.t_base + self.b_base + self.l_side + self.r_side
    def square(self):
        p = self.perimeter()/2
        if self.examination():
            return ((p-self.t_base) * (p-self.b_base) * (p-self.l_side) * (p-self.r_side)) ** 0.5
        else:
            return "Трапеция не равнобокая."
    def print_side(self):
        return (self.t_base, self.b_base, self.l_side, self.r_side)

t1 = Trapezoid((-6,0), (-2,3), (2,3), (6,0))
print(t1.examination())
print(t1.perimeter())
print(t1.square())
print(t1.print_side())