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1). Segitiga Kongruen... Nilai X = 7 cm
2). Panjang AB = AD x AC
= 20 x 32
= 640
Panjang BC = CD x CA
= 12 x 32
= 384
Panjang BD = DC x DA
= 12 x 20
= 240
Maaf kalau aku salah :)