# luahyperbolic/examples/ : TODO

- introduction to Poincaré Disk
- geodesics
- circles
- 5th postulate
- hyperbolic triangles, ideal triangles
- triangles : angles
- existence of regular n-gon with prescribed angles
- existence of circumcenter (math explanation)
- tilings
- reflection of triangle/polygon along edge
- circle packings, density
- isometries : reflection


From Cannon, Floyd, Kenyon and Parry, page 90 : contructing a triangle with prescribed angles

Images from https://en.wikipedia.org/wiki/Hyperbolic_geometry : apeirogon, pseudogon, hypercycles, tilings