Cho hai tam giác \(ABC\) và \(DEF\) có \(AB = EF;\,BC = FD;AC = ED;\) \(\widehat A = \widehat E;\widehat B = \widehat F;\widehat D = \widehat C\). Khi đó

\({34^0}\)

\({35^0}\)       

\({60^0}\)       

\({90^0}\)

\(\Delta ABC = \Delta KOH\) 

\(\Delta ABC = \Delta HOK\)   

\(\Delta ABC = \Delta OHK\) 

\(\Delta ABC = \Delta OKH\)

\({40^0}\)                                     

\({50^0}\)

\({49^0}\)                                      

\({98^0}\)

\(\Delta ABC = \Delta CDA\)

\(\widehat {ABC} = \widehat {CDA}\)        

\(\widehat {BAC} = \widehat {DAC}\)        

\(\widehat {BCA} = \widehat {DAC}\)

\(\widehat B = {60^0}\)                                     

\(\widehat B = {90^0}\)

\(\widehat B = {40^0}\)                                   

\(\widehat B = {80^0}\)

\({40^0}\)                                     

\({50^0}\)       

\({49^0}\)                                      

 \({60^0}\)