| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 447 (76%) | 2008-12-27 |
| Complementary Angles 2 | easy | 322 (54%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 391 (66%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 259 (44%) | 2008-12-27 |
| Straight Angle 1 | easy | 264 (45%) | 2008-12-24 |
| Vertical Angles 1 | medium | 218 (37%) | 2008-12-27 |
| Parallel Lines 1 | easy | 307 (52%) | 2008-12-27 |
| Parallel Lines 2 | easy | 289 (49%) | 2008-12-27 |
| Parallel Lines 3 | easy | 309 (52%) | 2008-12-27 |
| Parallel Lines 4 | hard | 197 (33%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 257 (43%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 188 (32%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 149 (25%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 86 (15%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 121 (20%) | 2008-12-28 |
| Parallelogram 1 | easy | 126 (21%) | 2008-12-29 |
| Parallelogram 2 | easy | 116 (20%) | 2008-12-29 |
| Parallelogram 3 | medium | 107 (18%) | 2008-12-29 |
| Parallelogram 4 | easy | 110 (19%) | 2008-12-29 |
| Parallelogram 5 | hard | 101 (17%) | 2008-12-29 |
| Parallelogram 6 | easy | 104 (18%) | 2008-12-29 |
| Parallelogram 7 | medium | 96 (16%) | 2008-12-29 |
| Parallelogram 8 | hard | 89 (15%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 84 (14%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 72 (12%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 74 (13%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 107 (18%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 91 (15%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 90 (15%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 95 (16%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 88 (15%) | 2009-01-18 |
| Similar Triangles 1 | easy | 107 (18%) | 2009-02-08 |
| Similar Triangles 2 | easy | 85 (14%) | 2009-02-08 |
| Similar Triangles 3 | medium | 72 (12%) | 2009-02-08 |
| Similar Triangles 4 | hard | 59 (10%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 143 (24%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 134 (23%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 129 (22%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 91 (15%) | 2009-02-08 |