U1_ej8_1_practica

-v

u+v

u-v

V = Point({-2, 3, 1})
m = Point({2, -3, -1})
v = Vector(V)
U = Point({-1, -2, 4})
w = Vector(m)
u = Vector(U)
a = Angle(v, u)
b: u + v
R = Point({-3, 1, 5})
UR = Segment(U, R)
VR = Segment(V, R)
c: u - v
S = Point({1, -5, 3})
mS = Segment(m, S)
SU = Segment(S, U)