| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 692 (77%) | 2008-12-27 |
| Complementary Angles 2 | easy | 494 (55%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 617 (69%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 401 (45%) | 2008-12-27 |
| Straight Angle 1 | easy | 415 (46%) | 2008-12-24 |
| Vertical Angles 1 | medium | 334 (37%) | 2008-12-27 |
| Parallel Lines 1 | easy | 484 (54%) | 2008-12-27 |
| Parallel Lines 2 | easy | 460 (51%) | 2008-12-27 |
| Parallel Lines 3 | easy | 492 (55%) | 2008-12-27 |
| Parallel Lines 4 | hard | 291 (33%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 405 (45%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 283 (32%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 207 (23%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 110 (12%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 159 (18%) | 2008-12-28 |
| Parallelogram 1 | easy | 196 (22%) | 2008-12-29 |
| Parallelogram 2 | easy | 177 (20%) | 2008-12-29 |
| Parallelogram 3 | medium | 156 (17%) | 2008-12-29 |
| Parallelogram 4 | easy | 164 (18%) | 2008-12-29 |
| Parallelogram 5 | hard | 137 (15%) | 2008-12-29 |
| Parallelogram 6 | easy | 154 (17%) | 2008-12-29 |
| Parallelogram 7 | medium | 136 (15%) | 2008-12-29 |
| Parallelogram 8 | hard | 120 (13%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 124 (14%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 108 (12%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 106 (12%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 155 (17%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 120 (13%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 114 (13%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 133 (15%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 123 (14%) | 2009-01-18 |
| Similar Triangles 1 | easy | 156 (17%) | 2009-02-08 |
| Similar Triangles 2 | easy | 118 (13%) | 2009-02-08 |
| Similar Triangles 3 | medium | 98 (11%) | 2009-02-08 |
| Similar Triangles 4 | hard | 82 (09%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 192 (21%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 167 (19%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 155 (17%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 108 (12%) | 2009-02-08 |