There are some very clever tips at the Daily Post today http://dailypost.wordpress.com/2012/11/02/weekly-photo-challenge-geometry/
Now, I’m sure the geometry was accurate in these three very old cathedrals but sadly craning my neck and holding a camera still and straight has made them look a touch wonky! Here is Gloucester cathedral.
check out the fan vaulting in my earlier post if you don’t believe me! https://lucidgypsy.wordpress.com/2012/04/28/exeter-cathedral-2/
As I looked up, Lynne looked down!http://lynneayersbeyondthebrush.wordpress.com/2012/11/02/dont-forget-to-look-down/#
And here is a newbie with a lovely quilt!