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Bab Bangun Datar
Matematika SMP Kelas VII

7] x = (UQ . SR + RU . PQ) / (UQ + RU)
x = (8 . 7 + 10 . 34) / (10 + 8)
x = (56 + 340) / 18
x = 22 cm

8] perpanjang garis EF ke BC di titik P
PF / CD = FB / FD
PF / 16 = 1 / (1 + 1)
PF = 16/2 = 8 cm

EP / AB = CE / CA
(EF + PF) / 24 = 1 / (1 + 1)
EF + 8 = 24 / 2
EF = 12 - 8
EF = 4 cm