| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 672 (77%) | 2008-12-27 |
| Complementary Angles 2 | easy | 475 (55%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 598 (69%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 383 (44%) | 2008-12-27 |
| Straight Angle 1 | easy | 396 (46%) | 2008-12-24 |
| Vertical Angles 1 | medium | 319 (37%) | 2008-12-27 |
| Parallel Lines 1 | easy | 466 (54%) | 2008-12-27 |
| Parallel Lines 2 | easy | 442 (51%) | 2008-12-27 |
| Parallel Lines 3 | easy | 474 (55%) | 2008-12-27 |
| Parallel Lines 4 | hard | 275 (32%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 387 (45%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 267 (31%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 191 (22%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 101 (12%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 143 (16%) | 2008-12-28 |
| Parallelogram 1 | easy | 176 (20%) | 2008-12-29 |
| Parallelogram 2 | easy | 157 (18%) | 2008-12-29 |
| Parallelogram 3 | medium | 139 (16%) | 2008-12-29 |
| Parallelogram 4 | easy | 145 (17%) | 2008-12-29 |
| Parallelogram 5 | hard | 122 (14%) | 2008-12-29 |
| Parallelogram 6 | easy | 136 (16%) | 2008-12-29 |
| Parallelogram 7 | medium | 120 (14%) | 2008-12-29 |
| Parallelogram 8 | hard | 107 (12%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 108 (12%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 93 (11%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 90 (10%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 136 (16%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 105 (12%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 102 (12%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 116 (13%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 108 (12%) | 2009-01-18 |
| Similar Triangles 1 | easy | 137 (16%) | 2009-02-08 |
| Similar Triangles 2 | easy | 102 (12%) | 2009-02-08 |
| Similar Triangles 3 | medium | 85 (10%) | 2009-02-08 |
| Similar Triangles 4 | hard | 71 (08%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 175 (20%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 154 (18%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 144 (17%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 98 (11%) | 2009-02-08 |