| Answer | Crossword Clue |
|---|---|
| EPONYM | Euclid, vis- -vis geometry |
| euclidian | related to Euclid, or to the geometry of Euclid also EUCLIDEAN |
| euclidean | related to Euclid, or to the geometry of Euclid also EUCLIDIAN |
| euclidean | Of or denoting the system of geometry based on the work of Euclid and corresponding to the geometry of ordinary experience |
