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AEB ~ CFD
ABC ~ ADC
BEC ~ DFA
b. AC=√(AB²+BC²)= √(8²+6²)= 10
DF = BE = (AB)(CD)/(AC) = 8(6)/10 = 4,8
AE= CF =√(AB² - BE²) = √(6²- 4,8²) = √12,96 = 3,6
EF = AC - AE - CF = 10 - 3,6 - 3,6 = 2,8