Natalia Tuzina
Мыслитель
(8894)
10 лет назад
Ответ
1) L C = 32*2 = 64 град.
L D 180 - L C = 180 - 64 = 116 град.
5) L ADK = L KDC = L DKC =>
CD = KC = 8 =>
AD = BC = BK + KC = 2 + 8 = 10
7) L BCD = L BAD =>
AB // CD и BC // AD => BC = AD = 4
AB // CD => L NAB = L ADC
L ADC = L DCF,
но и L DFC = L NAB = L DCF =>
CD = DF = AB = 5