MK = 13
MP = PK = MK\2 = 13\2 = 6,5
L K = 180\3 = 60 град. ------> L KPR = 90 - 60 = 30 град. =>
KR = PK\2 = 6,5\2 = 3,25 ------> NR = NK - KR = 13 - 3,25 = 9,75
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MK = 13
MP = PK = MK\2 = 13\2 = 6,5
L K = 180\3 = 60 град. ------> L KPR = 90 - 60 = 30 град. =>
KR = PK\2 = 6,5\2 = 3,25 ------> NR = NK - KR = 13 - 3,25 = 9,75