Well, if you change the wing camber by extending flaps, the wing chord line, which is the reference for AoA, changes. So for that section of the wing, the relative wind does not change, but the AoA in reference to the chord line does change. So the inner section of the wing and the outer section of the wing are now experiencing different AoA's.

Once you start adding "stuff" to a wing, the calculations get more complicated.

Best of luck,

Wes
N78PS