[بن زرام]

https://www.olejarz.com/arted/perspective/woodfloor.html

https://www.math.utah.edu/~treiberg/Pers ... rspect.htm

https://www.math.nus.edu.sg/aslaksen/pro ... theory.htm

https://en.wikipedia.org/wiki/Image:Tabl ... lume_2.jpg