| c66 | |
| r1407 | circumcircle, concyclic points |
| r1408 | circumcircle, intouch triangle |
| r1409 | circumcenter, tangent circles |
| r1410 | |
| r1411 | Nagel point, incircle |
| r1412 | Nagel point, circumcenter, concyclic points |
| r1413 | Nagel point, circumcenter, tangent circles |
| r1457 | incenter |