house walls

 From:  Frenchy Pilou (PILOU) 27 Sep 2008  (4 of 7) 
2019.4 In reply to 2019.3 
Why 2 lines ?
Seems very easy :)
But maybe I don't understand the question :)
(a little image of the question can help)

EDITED: 27 Sep 2008 by PILOU
Attachments:
Attachmentscale1d.jpg