| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 232 (71%) | 2008-12-27 |
| Complementary Angles 2 | easy | 223 (69%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 208 (64%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 187 (58%) | 2008-12-27 |
| Straight Angle 1 | easy | 156 (48%) | 2008-12-24 |
| Vertical Angles 1 | medium | 160 (49%) | 2008-12-27 |
| Parallel Lines 1 | easy | 177 (54%) | 2008-12-27 |
| Parallel Lines 2 | easy | 165 (51%) | 2008-12-27 |
| Parallel Lines 3 | easy | 158 (49%) | 2008-12-27 |
| Parallel Lines 4 | hard | 155 (48%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 138 (42%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 138 (42%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 109 (34%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 68 (21%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 94 (29%) | 2008-12-28 |
| Parallelogram 1 | easy | 100 (31%) | 2008-12-29 |
| Parallelogram 2 | easy | 94 (29%) | 2008-12-29 |
| Parallelogram 3 | medium | 91 (28%) | 2008-12-29 |
| Parallelogram 4 | easy | 94 (29%) | 2008-12-29 |
| Parallelogram 5 | hard | 87 (27%) | 2008-12-29 |
| Parallelogram 6 | easy | 89 (27%) | 2008-12-29 |
| Parallelogram 7 | medium | 83 (26%) | 2008-12-29 |
| Parallelogram 8 | hard | 71 (22%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 67 (21%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 60 (18%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 61 (19%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 89 (27%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 74 (23%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 71 (22%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 78 (24%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 80 (25%) | 2009-01-18 |
| Similar Triangles 1 | easy | 97 (30%) | 2009-02-08 |
| Similar Triangles 2 | easy | 79 (24%) | 2009-02-08 |
| Similar Triangles 3 | medium | 67 (21%) | 2009-02-08 |
| Similar Triangles 4 | hard | 53 (16%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 118 (36%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 109 (34%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 104 (32%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 80 (25%) | 2009-02-08 |