Bob,
The Chord is not parallel to the center line, since the incidence of the wing may not align with the fuselage center – a common practice in full scale aircraft.
Should I have added, in the plan view only?
Ed, still banging your head on the wall? Interesting.
No, not realy, but once I ask a question I like an answer. How else does one learn? This has now gone way beyond the original discussion in which my interpretation was incorrect. I have now learned something.
Tall Paul's explanation is quite acceptable and makes sense and, I trust, correct.
Ed S