a) MB/AM = DM/CM (Свойство подобных треугольников), DM = MB*CM/AM; DM = 12*8/9 = 32/3
б) DP/CP = PB/AP, DP = CP*PB/AP = 5*12/3 = 20
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a) MB/AM = DM/CM (Свойство подобных треугольников), DM = MB*CM/AM; DM = 12*8/9 = 32/3
б) DP/CP = PB/AP, DP = CP*PB/AP = 5*12/3 = 20