| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 566 (69%) | 2008-12-27 |
| Complementary Angles 2 | easy | 564 (69%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 545 (67%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 448 (55%) | 2008-12-27 |
| Straight Angle 1 | easy | 489 (60%) | 2008-12-24 |
| Vertical Angles 1 | medium | 407 (50%) | 2008-12-27 |
| Parallel Lines 1 | easy | 491 (60%) | 2008-12-27 |
| Parallel Lines 2 | easy | 483 (59%) | 2008-12-27 |
| Parallel Lines 3 | easy | 473 (58%) | 2008-12-27 |
| Parallel Lines 4 | hard | 290 (35%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 416 (51%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 328 (40%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 313 (38%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 156 (19%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 300 (37%) | 2008-12-28 |
| Parallelogram 1 | easy | 414 (51%) | 2008-12-29 |
| Parallelogram 2 | easy | 407 (50%) | 2008-12-29 |
| Parallelogram 3 | medium | 330 (40%) | 2008-12-29 |
| Parallelogram 4 | easy | 392 (48%) | 2008-12-29 |
| Parallelogram 5 | hard | 235 (29%) | 2008-12-29 |
| Parallelogram 6 | easy | 370 (45%) | 2008-12-29 |
| Parallelogram 7 | medium | 307 (38%) | 2008-12-29 |
| Parallelogram 8 | hard | 212 (26%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 268 (33%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 256 (31%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 250 (31%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 358 (44%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 277 (34%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 195 (24%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 334 (41%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 295 (36%) | 2009-01-18 |
| Similar Triangles 1 | easy | 309 (38%) | 2009-02-08 |
| Similar Triangles 2 | easy | 259 (32%) | 2009-02-08 |
| Similar Triangles 3 | medium | 171 (21%) | 2009-02-08 |
| Similar Triangles 4 | hard | 127 (16%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 368 (45%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 282 (34%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 202 (25%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 131 (16%) | 2009-02-08 |