20.10 Matematika ( Sertakan cara )
=> (insert nama bab here)
a) A(3,2), B(9,5) ; AC : AB = 2 : 1
Jarak A dan B = (9-3,5-2)
= (6,3)
C = 2 x (6,3) + (3,2)
C = (12,6) + (3,2)
C = (15,8)
b) A(-1,-3), B(7,5), C = titik tengah AB
Jarak A dan B = (7-(-1),5-(-3)
Jarak A dan B = (8,8)
C = A + (4,4)
C = (-1+4,-3+4)
C = (3,1)
c) A(-3,-2), B(7,3) ; AC : CB = 3 : 2
A => B = (7 – (-3),(3 – (-2))
A => B = (10,5)
C = A + (6,3)
C = (-3,-2) + (6,3)
C = (3,1)