Bài 3 sách giáo khoa

from math import sqrt
from math import pow
def distance_points(ax,ay,bx,by):
return sqrt(pow(bx-ax,2) +pow(by - ay,2))
x1=float(input("Enter x1: "))
y1=float(input("Enter y1: "))
x2=float(input("Enter x2: "))
y2=float(input("Enter y2: "))
x3=float(input("Enter x3: "))
y3=float(input("Enter y3: "))
dab=distance_points(x1,y1,x2,y2)
dbc=distance_points(x2,y2,x3,y3)
dac=distance_points(x1,y1,x3,y3)
print("d_AB={:.3f}".format(dab))
print("d_BC={:.3f}".format(dbc))
print("d_AC={:.3f}".format(dac))