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\(\Delta ABC = \Delta FED\)

\(\Delta ABC = \Delta FDE\)

\(\Delta BAC = \Delta FED\)

\(\Delta ABC = \Delta DEF\)

\(x = 10\,cm.\)

\(x = 11\,cm.\)

\(x = 8\,cm.\)

 \(x = 5\,cm.\)

\({100^0}\)                     

\({40^0}\)                   

\({140^0}\)                

\({50^0}\)

\({25^0}\) 

\({35^0}\)                    

\({60^0}\)                  

 \({90^0}\)

\(AC = 15\,cm;BC = 12\,cm.\)          

\(AC = 12\,cm;BC = 14,5\,cm.\)                               

\(AC = 12\,cm;BC = 15\,cm.\)          

\(AC = 10\,cm;BC = 15\,cm.\)

\({80^0}\)                     

\({70^0}\)                  

\({100^0}\)                 

\({90^0}\)