| trigōnon | Greek | triangle , Triangulum |
| 〈κατὰ τρίγωνον〉 kata trigōnon ‘in trine’ | Greek | in trine |
| 〈πρῶτον τρίγωνον〉 prōton trigōnon ‘first triangle’ | Greek | first triangle |
| 〈Δελτωτόν〉 Deltōton ‘Triangulum’ | Greek | Triangulum |
| 〈βασιλικὸν τρίγωνον〉 basilikon trigōnon ‘royal triangle’ | Greek | royal triangle |
| 〈trigonum saturni〉 ‘Saturn's triangle’ | Latin | Saturn's triangle |
| 〈trigonum orthogonum〉 ‘right triangle’ | Latin | right triangle |
| 〈deltoton〉 ‘Triangulum’ | Latin | Triangulum |
| 〈trigonum〉 ‘trine’ | Latin | trine , Triangulum |
| 〈त्रिकोण〉 trikoṇa ‘Trinal House’ | Sanskrit | Triangle |