| There Are Integral Heptagons, no Three Points on a Line, no Four on a Circle Recent countries visiting this post |  |
 | 1 | United States |
 | 1 | Russian Federation |
| There Are Integral Heptagons, no Three Points on a Line, no Four on a Circle Recent countries visiting this post | |
| 1 | United States |
| 1 | Russian Federation |