Projective geometry is endlessly fascinating. The six points of a complete quadrilateral (blue) are centrally projected to a conic. The images of opposite points define 3 lines (green) that are concurrent (as indicated by the red arrow). Based on an illustration 1/2pic.twitter.com/vCKDcZofzh
-
Show this thread
of the Hesse Transfer Principle in Richter-Gebert's Perspectives on Projective Geometry.
@geogebra #projectivegeometry
2/2
2:22 PM - 4 Dec 2019
0 replies
0 retweets
1 like
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.