treugolnik.py

from math import sqrt, acos, degrees


def compute_len(x_0, y_0, x_1, y_1):
    len_line = sqrt((x_1 - x_0) ** 2 + (y_1 - y_0) ** 2)
    return len_line


def compute_area(a_1, a_2, a_3):
    p = (a_1 + a_2 + a_3) / 2
    area = sqrt(p * (p - a_1) * (p - a_2) * (p - a_3))
    return area


def compute_angle(a_1, a_2, a_3):
    angle_rad = acos((a_1 ** 2 + a_2 ** 2 - a_3 ** 2) / (2 * a_1 * a_2))
    return degrees(angle_rad)


x_a = float(input('x_a= '))
y_a = float(input('y_a= '))
x_b = float(input('x_b= '))
y_b = float(input('y_b= '))
x_c = float(input('x_c= '))
y_c = float(input('y_c= '))

a = compute_len(x_b, y_b, x_c, y_c)
b = compute_len(x_a, y_a, x_c, y_c)
c = compute_len(x_a, y_a, x_b, y_b)
if a + b <= c or a + c <= b or b + c <= a:
    print('Треугольник не существует')
else:
    s = compute_area(a, b, c)
    p = a + b + c
    angle_a = compute_angle(c, b, a)
    angle_b = compute_angle(c, a, b)
    angle_c = compute_angle(a, b, c)
print('Стороны: ', round(a, 3), round(b, 3), round(c, 3))
print('Площадь: ', round(s, 3))
print('Периметр: ', round(p, 3))
print('Углы: ', round(angle_a, 3), round(angle_b, 3), round(angle_c, 3))