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D. sudut BAD + sudut BCD = 180
harusnya (sudut yg berhadapan sama besar)
11.
sudut KLO = sudut KNO = 180 - 90 - 58 = 32
sudut NKO = 180 - 90 - 32 = 58
sudut LMN = sudut LKN =180 - 32 - 32 = 116 (B)