THETAS
| Date | Clue |
|---|---|
| 2020-03-25 | Trigonometry symbols for angles |
| 2011-02-15 | Sorority members such as Ann-Margret and Laura Bush |
| 2010-11-19 | Trig symbols |
| 2008-05-21 | Certain sorority members |
| 2007-02-03 | Angle symbols, in geometry |
| 2006-02-15 | Some sorority women |
| 2002-07-31 | Some sorority women |