| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 273 (64%) | 2008-12-27 |
| Complementary Angles 2 | easy | 269 (63%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 259 (60%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 203 (47%) | 2008-12-27 |
| Straight Angle 1 | easy | 223 (52%) | 2008-12-24 |
| Vertical Angles 1 | medium | 150 (35%) | 2008-12-27 |
| Parallel Lines 1 | easy | 220 (51%) | 2008-12-27 |
| Parallel Lines 2 | easy | 213 (50%) | 2008-12-27 |
| Parallel Lines 3 | easy | 207 (48%) | 2008-12-27 |
| Parallel Lines 4 | hard | 116 (27%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 196 (46%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 129 (30%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 121 (28%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 59 (14%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 115 (27%) | 2008-12-28 |
| Parallelogram 1 | easy | 160 (37%) | 2008-12-29 |
| Parallelogram 2 | easy | 151 (35%) | 2008-12-29 |
| Parallelogram 3 | medium | 96 (22%) | 2008-12-29 |
| Parallelogram 4 | easy | 145 (34%) | 2008-12-29 |
| Parallelogram 5 | hard | 61 (14%) | 2008-12-29 |
| Parallelogram 6 | easy | 132 (31%) | 2008-12-29 |
| Parallelogram 7 | medium | 79 (18%) | 2008-12-29 |
| Parallelogram 8 | hard | 56 (13%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 80 (19%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 79 (18%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 72 (17%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 168 (39%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 100 (23%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 76 (18%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 145 (34%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 108 (25%) | 2009-01-18 |
| Similar Triangles 1 | easy | 127 (30%) | 2009-02-08 |
| Similar Triangles 2 | easy | 96 (22%) | 2009-02-08 |
| Similar Triangles 3 | medium | 37 (09%) | 2009-02-08 |
| Similar Triangles 4 | hard | 29 (07%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 173 (40%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 106 (25%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 78 (18%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 32 (07%) | 2009-02-08 |