| Answer | Crossword Clue |
|---|---|
| AXIOM | Accepted postulate |
| AXIOM | Postulate. |
| POSIT | Postulate. |
| ASSUME | Postulate |
| PREMISE | Postulate |
| ASSERT | Postulate |
| GIVEN | Postulate |
| AXIOM | Postulate |
| THEORY | Postulate |
| POSIT | Postulate |
| AXIOM | Geometry postulate |
| LAW | Proven postulate |
| PARALLEL | Euclidean geometry's ... postulate |
| DARESAY | Venture to postulate |
| EUCLID | Parallel postulate proponent |
| ITHINK | Postulate of 1637 |
| ERR | Postulate a flat world |
