FRACTAL
| Date | Clue |
|---|---|
| 2019-11-02 | Snowflake shape |
| 2016-01-22 | Snowflake or crystal shape |
| 2010-08-22 | Geometric shape whose perimeter has infinite length |
| 2006-02-03 | Like some mathematical curves |
| 2003-03-16 | Geometric pattern used in computer models |
| 1997-02-15 | Irregular mathematical shape |