Timeline for Surfaces that can be rolled by a ball
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 27, 2012 at 17:21 | comment | added | Joseph O'Rourke | Great reference---Thank you, André! | |
| Sep 27, 2012 at 15:14 | history | answered | André Schlichting | CC BY-SA 3.0 |