| Title | Difficulty | Solved By | Date Added |
|---|---|---|---|
| Complementary Angles 1 | easy | 706 (72%) | 2008-12-27 |
| Complementary Angles 2 | easy | 676 (69%) | 2008-12-27 |
| Supplementary Angles 1 | easy | 670 (68%) | 2008-12-27 |
| Supplementary Angles 2 | medium | 542 (55%) | 2008-12-27 |
| Straight Angle 1 | easy | 595 (60%) | 2008-12-24 |
| Vertical Angles 1 | medium | 490 (50%) | 2008-12-27 |
| Parallel Lines 1 | easy | 545 (55%) | 2008-12-27 |
| Parallel Lines 2 | easy | 530 (54%) | 2008-12-27 |
| Parallel Lines 3 | easy | 534 (54%) | 2008-12-27 |
| Parallel Lines 4 | hard | 310 (32%) | 2008-12-28 |
| Converse of Parallel Lines 1 | easy | 447 (45%) | 2008-12-28 |
| Converse of Parallel Lines 2 | medium | 359 (36%) | 2008-12-28 |
| Converse of Parallel Lines 3 | medium | 326 (33%) | 2008-12-28 |
| Converse of Parallel Lines 4 | hard | 158 (16%) | 2008-12-28 |
| Converse of Parallel Lines 5 | medium | 310 (32%) | 2008-12-28 |
| Parallelogram 1 | easy | 435 (44%) | 2008-12-29 |
| Parallelogram 2 | easy | 425 (43%) | 2008-12-29 |
| Parallelogram 3 | medium | 343 (35%) | 2008-12-29 |
| Parallelogram 4 | easy | 409 (42%) | 2008-12-29 |
| Parallelogram 5 | hard | 244 (25%) | 2008-12-29 |
| Parallelogram 6 | easy | 386 (39%) | 2008-12-29 |
| Parallelogram 7 | medium | 318 (32%) | 2008-12-29 |
| Parallelogram 8 | hard | 216 (22%) | 2008-12-29 |
| Parallels and Perpendiculars 1 | medium | 272 (28%) | 2009-01-14 |
| Parallels and Perpendiculars 2 | medium | 259 (26%) | 2009-01-18 |
| Parallels and Perpendiculars 3 | medium | 253 (26%) | 2009-01-18 |
| Triangle Sum Theorem 1 | easy | 371 (38%) | 2009-01-14 |
| Triangle Sum Theorem 2 | medium | 284 (29%) | 2009-01-18 |
| Triangle Sum Theorem 3 | hard | 197 (20%) | 2009-01-18 |
| Triangle Exterior Angle Theorem 1 | easy | 341 (35%) | 2009-01-18 |
| Quadrilateral Sum Theorem 1 | easy | 299 (30%) | 2009-01-18 |
| Similar Triangles 1 | easy | 323 (33%) | 2009-02-08 |
| Similar Triangles 2 | easy | 267 (27%) | 2009-02-08 |
| Similar Triangles 3 | medium | 175 (18%) | 2009-02-08 |
| Similar Triangles 4 | hard | 128 (13%) | 2009-02-08 |
| Congruent Triangles 1 | easy | 380 (39%) | 2009-02-08 |
| Congruent Triangles 2 | medium | 287 (29%) | 2009-02-08 |
| Congruent Triangles 3 | hard | 203 (21%) | 2009-02-08 |
| Congruent Triangles 4 | hard | 131 (13%) | 2009-02-08 |