ABCD jajar genjang A.(2,-3) B.(9,-3) C.(14,9) Tentukan koordinat titik D ?

Jajar Genjang
A (2, -3)
B (9. -3)
C (14, 9)

D = C - B + A
D = {(14,9) - (9, -3)+ (2, -3)}
Dx = 14 - 9 + 2 = 7
Dy = 9 - (-3) + (-3) = 9 + 3 - 3 = 9
D(x,y) = (7,9)