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AE = CH = 10 cmAH = AC + CH = 15 + 10 = 25 cm
Karena AE = 2/3 AC, maka segitiga ABC sebangun segitiga AEF dengan perbandingan 2 : 3.Sehingga :AF = 2/3 . 9 = 6 cmEF = 2/3 . 12 = 8 cm
DG = CD + CG = 12 + EF = 12 + 8 = 20 cm
Maka :
AH : DG = 25 : 20
= 5 : 4
Semoga membantu.