diketahui titik A(1,2,4) B(5,3,6) C(13,5,p)segaris nilai p adalah....

A dan B
sumbu x = 5-1 = 4
sumbu y = 3-2 = 1
sumbu z = 6-4 = 2

(4,1,2)*2 = (8,2,4)
B dan C
Sb. x = 13 - 5 = 8
Sb. y = 5 - 3 = 2
Sb. z = p - 6 = 4

p=4+6 = 10