| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 744 (78%) | 2008-12-27 |
| Complementary Angles 2 | easy | 543 (57%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 665 (70%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 448 (47%) | 2008-12-27 |
| Straight Angle 1 | easy | 462 (49%) | 2008-12-24 |
| Vertical Angles 1 | medium | 369 (39%) | 2008-12-27 |
| Parallel Lines 1 | easy | 526 (55%) | 2008-12-27 |
| Parallel Lines 2 | easy | 500 (53%) | 2008-12-27 |
| Parallel Lines 3 | easy | 534 (56%) | 2008-12-27 |
| Parallel Lines 4 | hard | 329 (35%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 432 (45%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 308 (32%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 232 (24%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 132 (14%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 180 (19%) | 2008-12-28 |
| Parallelogram 1 | easy | 216 (23%) | 2008-12-29 |
| Parallelogram 2 | easy | 196 (21%) | 2008-12-29 |
| Parallelogram 3 | medium | 175 (18%) | 2008-12-29 |
| Parallelogram 4 | easy | 183 (19%) | 2008-12-29 |
| Parallelogram 5 | hard | 156 (16%) | 2008-12-29 |
| Parallelogram 6 | easy | 171 (18%) | 2008-12-29 |
| Parallelogram 7 | medium | 154 (16%) | 2008-12-29 |
| Parallelogram 8 | hard | 138 (15%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 136 (14%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 120 (13%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 118 (12%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 178 (19%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 144 (15%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 138 (15%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 151 (16%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 145 (15%) | 2009-01-18 |
| Similar Triangles 1 | easy | 178 (19%) | 2009-02-08 |
| Similar Triangles 2 | easy | 140 (15%) | 2009-02-08 |
| Similar Triangles 3 | medium | 121 (13%) | 2009-02-08 |
| Similar Triangles 4 | hard | 103 (11%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 212 (22%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 191 (20%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 178 (19%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 130 (14%) | 2009-02-08 |