Elliptic Geometry Zone
Road signs for mathematicians: a Cartesian intersection, and a warning for an elliptic geometry zone, where there are no parallel lines and all roads intersect.
Transcript
[Sign 1: a crossroads] "Cartesian Intersection" [Sign 2: several roads fanning out and meeting] "Elliptic Geometry Zone; All Roads Intersect"
Use this cartoon
Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2021-06-10-elliptic-geometry-zone/ (CC BY-NC 4.0)