| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 898 (70%) | 2008-12-27 |
| Complementary Angles 2 | easy | 917 (71%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 899 (70%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 765 (59%) | 2008-12-27 |
| Straight Angle 1 | easy | 822 (64%) | 2008-12-24 |
| Vertical Angles 1 | medium | 760 (59%) | 2008-12-27 |
| Parallel Lines 1 | easy | 791 (61%) | 2008-12-27 |
| Parallel Lines 2 | easy | 761 (59%) | 2008-12-27 |
| Parallel Lines 3 | easy | 749 (58%) | 2008-12-27 |
| Parallel Lines 4 | hard | 528 (41%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 642 (50%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 521 (40%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 433 (34%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 224 (17%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 368 (29%) | 2008-12-28 |
| Parallelogram 1 | easy | 450 (35%) | 2008-12-29 |
| Parallelogram 2 | easy | 448 (35%) | 2008-12-29 |
| Parallelogram 3 | medium | 359 (28%) | 2008-12-29 |
| Parallelogram 4 | easy | 374 (29%) | 2008-12-29 |
| Parallelogram 5 | hard | 201 (16%) | 2008-12-29 |
| Parallelogram 6 | easy | 330 (26%) | 2008-12-29 |
| Parallelogram 7 | medium | 268 (21%) | 2008-12-29 |
| Parallelogram 8 | hard | 157 (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 | 273 (21%) | 2009-01-18 |
| Similar Triangles 1 | easy | 379 (29%) | 2009-02-08 |
| Similar Triangles 2 | easy | 266 (21%) | 2009-02-08 |
| Similar Triangles 3 | medium | 186 (14%) | 2009-02-08 |
| Similar Triangles 4 | hard | 110 (09%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 424 (33%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 358 (28%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 285 (22%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 167 (13%) | 2009-02-08 |