| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 437 (76%) | 2008-12-27 |
| Complementary Angles 2 | easy | 313 (55%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 383 (67%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 252 (44%) | 2008-12-27 |
| Straight Angle 1 | easy | 257 (45%) | 2008-12-24 |
| Vertical Angles 1 | medium | 212 (37%) | 2008-12-27 |
| Parallel Lines 1 | easy | 302 (53%) | 2008-12-27 |
| Parallel Lines 2 | easy | 283 (49%) | 2008-12-27 |
| Parallel Lines 3 | easy | 303 (53%) | 2008-12-27 |
| Parallel Lines 4 | hard | 191 (33%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 247 (43%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 181 (32%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 143 (25%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 82 (14%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 116 (20%) | 2008-12-28 |
| Parallelogram 1 | easy | 117 (20%) | 2008-12-29 |
| Parallelogram 2 | easy | 107 (19%) | 2008-12-29 |
| Parallelogram 3 | medium | 101 (18%) | 2008-12-29 |
| Parallelogram 4 | easy | 104 (18%) | 2008-12-29 |
| Parallelogram 5 | hard | 94 (16%) | 2008-12-29 |
| Parallelogram 6 | easy | 98 (17%) | 2008-12-29 |
| Parallelogram 7 | medium | 90 (16%) | 2008-12-29 |
| Parallelogram 8 | hard | 80 (14%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 79 (14%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 67 (12%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 69 (12%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 99 (17%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 83 (15%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 82 (14%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 88 (15%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 84 (15%) | 2009-01-18 |
| Similar Triangles 1 | easy | 102 (18%) | 2009-02-08 |
| Similar Triangles 2 | easy | 83 (15%) | 2009-02-08 |
| Similar Triangles 3 | medium | 71 (12%) | 2009-02-08 |
| Similar Triangles 4 | hard | 57 (10%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 135 (24%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 129 (23%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 119 (21%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 87 (15%) | 2009-02-08 |