EF / DF = 1 / 2
EF / 10 = 1 / 2
2 × EF = 10 × 1
2 EF = 10
EF = 10 / 2
EF = 5 cm
Jadi panjang EF adalah 5 cm (A)
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EF / DF = 1 / 2
EF / 10 = 1 / 2
2 × EF = 10 × 1
2 EF = 10
EF = 10 / 2
EF = 5 cm
Jadi panjang EF adalah 5 cm (A)