| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 1455 (77%) | 2008-12-27 |
| Complementary Angles 2 | easy | 1290 (69%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 1379 (73%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 1061 (56%) | 2008-12-27 |
| Straight Angle 1 | easy | 1106 (59%) | 2008-12-24 |
| Vertical Angles 1 | medium | 955 (51%) | 2008-12-27 |
| Parallel Lines 1 | easy | 1206 (64%) | 2008-12-27 |
| Parallel Lines 2 | easy | 1155 (61%) | 2008-12-27 |
| Parallel Lines 3 | easy | 1144 (61%) | 2008-12-27 |
| Parallel Lines 4 | hard | 691 (37%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 1041 (55%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 772 (41%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 704 (37%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 280 (15%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 638 (34%) | 2008-12-28 |
| Parallelogram 1 | easy | 696 (37%) | 2008-12-29 |
| Parallelogram 2 | easy | 656 (35%) | 2008-12-29 |
| Parallelogram 3 | medium | 557 (30%) | 2008-12-29 |
| Parallelogram 4 | easy | 624 (33%) | 2008-12-29 |
| Parallelogram 5 | hard | 367 (20%) | 2008-12-29 |
| Parallelogram 6 | easy | 584 (31%) | 2008-12-29 |
| Parallelogram 7 | medium | 507 (27%) | 2008-12-29 |
| Parallelogram 8 | hard | 333 (18%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 445 (24%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 413 (22%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 405 (22%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 570 (30%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 449 (24%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 300 (16%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 508 (27%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 446 (24%) | 2009-01-18 |
| Similar Triangles 1 | easy | 498 (26%) | 2009-02-08 |
| Similar Triangles 2 | easy | 394 (21%) | 2009-02-08 |
| Similar Triangles 3 | medium | 277 (15%) | 2009-02-08 |
| Similar Triangles 4 | hard | 190 (10%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 675 (36%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 548 (29%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 405 (22%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 270 (14%) | 2009-02-08 |