U5_ej13_a

V1 = NaN
A = Point({1, 3})
a = Vector(A)
B = Point({2, 3})
b = Vector(B)
C = Point({1, 1})
c = Vector(C)
U = Point({-1, 1})
u = Vector(U)
E = Point({2, -2})
e = Vector(E)
V = Point({-2, 1})
v = Vector(V)
O = Point({0, 0})
D = Point({2, -1})
d = Vector(D)
F = Point({-1, -2})
f = Vector(F)