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b. sudut sepihak (dalam) : A2-B1, A3-B4, D2-C1, D3-C4, A4-D1, A3-D2, B4-C1,B3-C2
sudut sepihak (luar) : A1-D4, A2-D3, B1-C4, B2-C3, A1-B2, A4-B3, D1-C2, D4-C3
c. sudut bersebrangan (dalam) : A4-D2, A3-D1, B4-C2, B3-C1, A2-B4, A3-B1, D2-C4, D3-C1
sudut bersebrangan (luar) : A1-B3, A4-B2, D1-C3, D4-C2, A1-D3, A2-D4, B1-C3, B2-C4
semoga membantu ^^