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Segitiga ABC = Segitiga EDB
AB/EB=BC/BD
(2+6)/5=BC/6
8/5=BC/6
5xBC=8x6
5BC=48
BC=48/5
BC=9 3/5
CE=BC-BE
=9 3/5 - 5
=48/5 - 25/5
=23/5
=4 3/5 cm
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Catatan:
AB & EB= Garis didepan sudut bulat hitam
BC & BD= Garis alas segitiga paling panjang
Demikian semoga membantu dan bermanfaat!