| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 892 (70%) | 2008-12-27 |
| Complementary Angles 2 | easy | 911 (71%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 892 (70%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 759 (59%) | 2008-12-27 |
| Straight Angle 1 | easy | 817 (64%) | 2008-12-24 |
| Vertical Angles 1 | medium | 756 (59%) | 2008-12-27 |
| Parallel Lines 1 | easy | 787 (61%) | 2008-12-27 |
| Parallel Lines 2 | easy | 757 (59%) | 2008-12-27 |
| Parallel Lines 3 | easy | 746 (58%) | 2008-12-27 |
| Parallel Lines 4 | hard | 525 (41%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 639 (50%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 519 (41%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 432 (34%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 224 (18%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 367 (29%) | 2008-12-28 |
| Parallelogram 1 | easy | 448 (35%) | 2008-12-29 |
| Parallelogram 2 | easy | 446 (35%) | 2008-12-29 |
| Parallelogram 3 | medium | 357 (28%) | 2008-12-29 |
| Parallelogram 4 | easy | 372 (29%) | 2008-12-29 |
| Parallelogram 5 | hard | 199 (16%) | 2008-12-29 |
| Parallelogram 6 | easy | 327 (26%) | 2008-12-29 |
| Parallelogram 7 | medium | 265 (21%) | 2008-12-29 |
| Parallelogram 8 | hard | 156 (12%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 310 (24%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 241 (19%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 240 (19%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 465 (36%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 363 (28%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 230 (18%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 369 (29%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 272 (21%) | 2009-01-18 |
| Similar Triangles 1 | easy | 377 (29%) | 2009-02-08 |
| Similar Triangles 2 | easy | 265 (21%) | 2009-02-08 |
| Similar Triangles 3 | medium | 185 (14%) | 2009-02-08 |
| Similar Triangles 4 | hard | 109 (09%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 422 (33%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 357 (28%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 285 (22%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 166 (13%) | 2009-02-08 |