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from math import sqrt
class Point:
def __init__(self, x: float, y: float):
self.x = x
self.y = y
def dist(p1: Point, p2: Point) -> float:
return sqrt((p2.x - p1.x) ** 2 + (p2.y - p1.y) ** 2)
def area_triangle(p1: float, p2: float, p3: float) -> float:
p = (a + b + c) / 2
return sqrt(p * (p - a) * (p - b) * (p - c))
def solve(a: Point, b: Point, c: Point, d: Point, e: Point) -> float:
ab = dist(a, b)
ac = dist(a, c)
ad = dist(a, d)
ae = dist(a, e)
bc = dist(b, c)
cd = dist(c, d)
de = dist(d, e)
a1 = area_triangle(ab, bc, ac)
a2 = area_triangle(ac, cd, ad)
a3 = area_triangle(ad, de, ae)
return a1 + a2 + a3
ax, ay = map(int, input("Ax, Ay = ").split())
bx, by = map(int, input("Bx, By = ").split())
cx, cy = map(int, input("Cx, Cy = ").split())
dx, dy = map(int, input("Dx, Dy = ").split())
ex, ey = map(int, input("Ex, Ey = ").split())
res = solve( Point(ax, ay)
, Point(bx, by)
, Point(cx, cy)
, Point(dx, dy)
, Point(ex, ey) )
print(f"Площадь фигуры со введёнными точками равна {res}")
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