x_1-x_2-Ebene

x_1-x_3-Ebene

x_2-x_3-Ebene

S_{12}

S_{13}

S_{23}

S_{12}

S_{13}

S_{23}

E12: z = 0
E13: y = 0
E23: x = 0
a = false
b = false
c = false
S12: g(-3)
S13: g(-1)
S23: g(1)
d = false
e = false
f = false
A: (-4, -3, -1)
B: (2, 2, 2)
C: (-2, 1, 1)