print("Enter the coordinates of point A")
x1=int(input("X = "))
y1=int(input("Y = "))
print("Enter the coordinates of point B")
x2=int(input("X = "))
y2=int(input("Y = "))
print("Enter the coordinates of point C")
x3=int(input("X = "))
y3=int(input("Y = "))
print("\n",' A',"(",x1,",",y1,")")
print(' /\ ')
print(' / \ ')
print(' / \ ')
print(' / \ ')
print(' / \ ')
print(' / \ ')
print(' / \ ')
print(' /______________\ ')
print('B',' C')
print("(",x2,",",y2,")"," ","(",x3,",",y3,")")
print("\n","The coordinates of A =(",x1,",",y1,")")
print("\n","The coordinates of B =(",x2,",",y2,")")
print("\n","The coordinates of C =(",x3,",",y3,")")
A=abs((x1*(y2-y3)+x2*(y3-y1)+x3*(y1-y2))*0.5)
print("\n","The area of triangle ABC =",A,"sq. units")