① Can you make the two right angles of your triangle pass through point B and point C respectively? If possible, please find out the length of AP at this time; If not, please explain why.
② Move the position of the triangle again, so that the vertex P of the triangle moves on AD. The right-angle side PH always passes through point B, and the other right-angle side PF intersects with the extension line of DC at point Q, and intersects with BC at point E. Is it OK for CE=2cm? If possible, please find out the length of AP at this time; If not, please explain why.