Here's how to play all 7 chords in the key of A -- in any position on the fretboard.
Each harmony in this key is formed from the underlying scale of the key. In this case, the A major scale: And on the guitar, all of these chords follow a predictable (CAGED chord shape) pattern up the fretboard....
And on the guitar, all of these chords follow a predictable (CAGED chord shape) pattern up the fretboard....

 
                 
             
                     
                        



 
    

 
            