Заданы координаты трех вершин треугольника (x1,y1), (x2,y2), (x3,y3). Найти его периметр и площадь. Напишите программу на Python.

from collections import namedtuple from math import pow, sqrt Point = namedtuple('Point', ('x', 'y')) a = Point(0, 0) b = Point(8, 2) c = Point(-2, 6) len_ = lambda p1, p2: sqrt(pow(p2.x - p1.x, 2) + pow(p2.y - p1.y, 2)) ab = len_(a, b) ac = len_(a, c) bc = len_(b, c) perimeter = sum((ab, ac, bc)) area = ((a.x - c.x) * (b.y - c.y) - (b.x - c.x) * (a.y - c.y)) / 2 print 'Perimeter: {}'.format(perimeter) print 'Area: {}'.format(area)