| Giver | Post | Date |
| sfm0309 | Re: Figures X and Y above show how eight identical triangular pi | 17-Mar-2022 |
| mahakkoli | Re: Figures X and Y above show how eight identical triangular pi | 22-Aug-2021 |
| Carcass | Re: Figures X and Y above show how eight identical triangular pi | 11-Jun-2020 |