help please

 

BAE is a straight line so its measure is 180^o  

 

So                                                                       a + b + 35^o  =  180^o  

 

And b is a vertical angle of FAE so                                      b  =  80^o  

 

Plugging b back into the 1st equation               a + 80^o + 35^o  =  180^o  

 

So                                                                                         a  =  65^o  

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