| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 669 (78%) | 2008-12-27 |
| Complementary Angles 2 | easy | 472 (55%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 594 (69%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 379 (44%) | 2008-12-27 |
| Straight Angle 1 | easy | 393 (46%) | 2008-12-24 |
| Vertical Angles 1 | medium | 318 (37%) | 2008-12-27 |
| Parallel Lines 1 | easy | 464 (54%) | 2008-12-27 |
| Parallel Lines 2 | easy | 440 (51%) | 2008-12-27 |
| Parallel Lines 3 | easy | 473 (55%) | 2008-12-27 |
| Parallel Lines 4 | hard | 274 (32%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 386 (45%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 266 (31%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 190 (22%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 101 (12%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 142 (16%) | 2008-12-28 |
| Parallelogram 1 | easy | 174 (20%) | 2008-12-29 |
| Parallelogram 2 | easy | 154 (18%) | 2008-12-29 |
| Parallelogram 3 | medium | 137 (16%) | 2008-12-29 |
| Parallelogram 4 | easy | 141 (16%) | 2008-12-29 |
| Parallelogram 5 | hard | 120 (14%) | 2008-12-29 |
| Parallelogram 6 | easy | 132 (15%) | 2008-12-29 |
| Parallelogram 7 | medium | 116 (13%) | 2008-12-29 |
| Parallelogram 8 | hard | 104 (12%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 107 (12%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 92 (11%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 89 (10%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 135 (16%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 104 (12%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 101 (12%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 116 (13%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 107 (12%) | 2009-01-18 |
| Similar Triangles 1 | easy | 133 (15%) | 2009-02-08 |
| Similar Triangles 2 | easy | 99 (11%) | 2009-02-08 |
| Similar Triangles 3 | medium | 83 (10%) | 2009-02-08 |
| Similar Triangles 4 | hard | 70 (08%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 174 (20%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 153 (18%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 143 (17%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 97 (11%) | 2009-02-08 |