setting multiable faces to aline to be flat "Help Please"

I have sides on a mesh that makes a shape on the side of my ship that has several divsions but only one is angled at the right angle and looks flat the other two angles are slitly move and one can clearly see the angled lines of the panel I want to have them all angled and at the same angle is there way I can set them in blender to match the angle of the one panel?

You can select all the verts you need alligned,
And scale them to 0, on the Z axis,
Then rotate then all to the angle needed