| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 261 (73%) | 2008-12-27 |
| Complementary Angles 2 | easy | 247 (69%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 229 (64%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 202 (57%) | 2008-12-27 |
| Straight Angle 1 | easy | 172 (48%) | 2008-12-24 |
| Vertical Angles 1 | medium | 168 (47%) | 2008-12-27 |
| Parallel Lines 1 | easy | 185 (52%) | 2008-12-27 |
| Parallel Lines 2 | easy | 172 (48%) | 2008-12-27 |
| Parallel Lines 3 | easy | 167 (47%) | 2008-12-27 |
| Parallel Lines 4 | hard | 159 (45%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 143 (40%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 145 (41%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 115 (32%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 72 (20%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 98 (27%) | 2008-12-28 |
| Parallelogram 1 | easy | 104 (29%) | 2008-12-29 |
| Parallelogram 2 | easy | 97 (27%) | 2008-12-29 |
| Parallelogram 3 | medium | 93 (26%) | 2008-12-29 |
| Parallelogram 4 | easy | 95 (27%) | 2008-12-29 |
| Parallelogram 5 | hard | 87 (24%) | 2008-12-29 |
| Parallelogram 6 | easy | 90 (25%) | 2008-12-29 |
| Parallelogram 7 | medium | 84 (24%) | 2008-12-29 |
| Parallelogram 8 | hard | 74 (21%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 69 (19%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 63 (18%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 64 (18%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 90 (25%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 75 (21%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 73 (20%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 80 (22%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 80 (22%) | 2009-01-18 |
| Similar Triangles 1 | easy | 98 (27%) | 2009-02-08 |
| Similar Triangles 2 | easy | 79 (22%) | 2009-02-08 |
| Similar Triangles 3 | medium | 67 (19%) | 2009-02-08 |
| Similar Triangles 4 | hard | 53 (15%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 119 (33%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 114 (32%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 108 (30%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 80 (22%) | 2009-02-08 |