| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 418 (72%) | 2008-12-27 |
| Complementary Angles 2 | easy | 414 (71%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 401 (69%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 330 (57%) | 2008-12-27 |
| Straight Angle 1 | easy | 352 (60%) | 2008-12-24 |
| Vertical Angles 1 | medium | 276 (47%) | 2008-12-27 |
| Parallel Lines 1 | easy | 350 (60%) | 2008-12-27 |
| Parallel Lines 2 | easy | 343 (59%) | 2008-12-27 |
| Parallel Lines 3 | easy | 336 (58%) | 2008-12-27 |
| Parallel Lines 4 | hard | 197 (34%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 310 (53%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 231 (40%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 219 (38%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 94 (16%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 209 (36%) | 2008-12-28 |
| Parallelogram 1 | easy | 264 (45%) | 2008-12-29 |
| Parallelogram 2 | easy | 255 (44%) | 2008-12-29 |
| Parallelogram 3 | medium | 192 (33%) | 2008-12-29 |
| Parallelogram 4 | easy | 246 (42%) | 2008-12-29 |
| Parallelogram 5 | hard | 111 (19%) | 2008-12-29 |
| Parallelogram 6 | easy | 226 (39%) | 2008-12-29 |
| Parallelogram 7 | medium | 174 (30%) | 2008-12-29 |
| Parallelogram 8 | hard | 95 (16%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 174 (30%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 169 (29%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 162 (28%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 262 (45%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 192 (33%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 123 (21%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 238 (41%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 201 (34%) | 2009-01-18 |
| Similar Triangles 1 | easy | 190 (33%) | 2009-02-08 |
| Similar Triangles 2 | easy | 149 (26%) | 2009-02-08 |
| Similar Triangles 3 | medium | 74 (13%) | 2009-02-08 |
| Similar Triangles 4 | hard | 47 (08%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 256 (44%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 183 (31%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 112 (19%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 56 (10%) | 2009-02-08 |