| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 735 (78%) | 2008-12-27 |
| Complementary Angles 2 | easy | 534 (57%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 656 (70%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 440 (47%) | 2008-12-27 |
| Straight Angle 1 | easy | 454 (48%) | 2008-12-24 |
| Vertical Angles 1 | medium | 362 (39%) | 2008-12-27 |
| Parallel Lines 1 | easy | 519 (55%) | 2008-12-27 |
| Parallel Lines 2 | easy | 494 (53%) | 2008-12-27 |
| Parallel Lines 3 | easy | 527 (56%) | 2008-12-27 |
| Parallel Lines 4 | hard | 326 (35%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 427 (45%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 303 (32%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 228 (24%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 130 (14%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 178 (19%) | 2008-12-28 |
| Parallelogram 1 | easy | 214 (23%) | 2008-12-29 |
| Parallelogram 2 | easy | 194 (21%) | 2008-12-29 |
| Parallelogram 3 | medium | 172 (18%) | 2008-12-29 |
| Parallelogram 4 | easy | 181 (19%) | 2008-12-29 |
| Parallelogram 5 | hard | 154 (16%) | 2008-12-29 |
| Parallelogram 6 | easy | 170 (18%) | 2008-12-29 |
| Parallelogram 7 | medium | 152 (16%) | 2008-12-29 |
| Parallelogram 8 | hard | 137 (15%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 134 (14%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 118 (13%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 116 (12%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 177 (19%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 142 (15%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 137 (15%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 150 (16%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 144 (15%) | 2009-01-18 |
| Similar Triangles 1 | easy | 176 (19%) | 2009-02-08 |
| Similar Triangles 2 | easy | 139 (15%) | 2009-02-08 |
| Similar Triangles 3 | medium | 119 (13%) | 2009-02-08 |
| Similar Triangles 4 | hard | 101 (11%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 211 (22%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 189 (20%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 177 (19%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 129 (14%) | 2009-02-08 |