13 points on a circle
Q: ??? 13 points in the plane are such that given any three
some fourth one lies on the same circle as those three. Show that all 13
are cocircular.
Julian Gilbey, 13 Jun 1996
Q: ??? 13 points in the plane are such that given any three
some fourth one lies on the same circle as those three. Show that all 13
are cocircular.
Julian Gilbey, 13 Jun 1996