| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 598 (78%) | 2008-12-27 |
| Complementary Angles 2 | easy | 408 (53%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 531 (69%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 325 (42%) | 2008-12-27 |
| Straight Angle 1 | easy | 339 (44%) | 2008-12-24 |
| Vertical Angles 1 | medium | 272 (35%) | 2008-12-27 |
| Parallel Lines 1 | easy | 410 (53%) | 2008-12-27 |
| Parallel Lines 2 | easy | 387 (50%) | 2008-12-27 |
| Parallel Lines 3 | easy | 422 (55%) | 2008-12-27 |
| Parallel Lines 4 | hard | 232 (30%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 345 (45%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 225 (29%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 179 (23%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 95 (12%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 136 (18%) | 2008-12-28 |
| Parallelogram 1 | easy | 160 (21%) | 2008-12-29 |
| Parallelogram 2 | easy | 146 (19%) | 2008-12-29 |
| Parallelogram 3 | medium | 131 (17%) | 2008-12-29 |
| Parallelogram 4 | easy | 136 (18%) | 2008-12-29 |
| Parallelogram 5 | hard | 115 (15%) | 2008-12-29 |
| Parallelogram 6 | easy | 126 (16%) | 2008-12-29 |
| Parallelogram 7 | medium | 112 (15%) | 2008-12-29 |
| Parallelogram 8 | hard | 97 (13%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 102 (13%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 87 (11%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 86 (11%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 125 (16%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 100 (13%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 98 (13%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 109 (14%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 103 (13%) | 2009-01-18 |
| Similar Triangles 1 | easy | 125 (16%) | 2009-02-08 |
| Similar Triangles 2 | easy | 94 (12%) | 2009-02-08 |
| Similar Triangles 3 | medium | 78 (10%) | 2009-02-08 |
| Similar Triangles 4 | hard | 66 (09%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 163 (21%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 142 (18%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 134 (17%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 95 (12%) | 2009-02-08 |