Problems
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| Stella Number | Problem Title |
|---|---|
| 1010.11 | Squares in a Square |
| 1020.15 | A Triangle with Given Midpoints |
| 1020.23 | Vacation on a Triangular Island |
| 1020.42 | Overlapping Squares |
| 1020.44 | Dividing the Yin and the Yang |
| 2070.43 | Big and Little Cubes |
| 2210.41 | Distance on the Number Line |
| 2760.21 | Adjacent Corner of a Square |
| 2761.11 | A Sum of Slopes |
| 3070.12 | A Supplement/Complement Conjecture |
| 3150.11 | Calculating an Angle |
| 3155.21 | Jasmine and Biscuit |
| 3155.22 | A Triangular Garden |
| 3155.41 | A Mystery Angle |
| 3155.51 | A Narrow Sinister Alley |
| 3160.11 | Triangle ABC is Isosceles |
| 3232.11 | Triangle-ing |
| 3261.11 | Quadrilateral BCDF is a Rhombus |
| 3305.11 | Diagonals of Two Regular Polygons |
| 3305.52 | Stop Sign |
| 3310.11 | Sum of Interior Angles |
| 3310.19 | A Pentangle |
| 3320.11 | A Ratio of Areas |
| 3320.21 | A Square Inside a Circle Inside a Square |
| 3350.11 | Overlapping Parallelograms |
| 3360.11 | Mystery Trapezoid |
| 3410.32 | Squares Make An Octagon |
| 3420.22 | The Area of a Cross |
| 3420.24 | Three Equilateral Triangles |
| 3420.25 | The Sum of Two Triangles |
| 3420.26 | Area of a Hexagon |
| 3420.27 | Triangle Area |
| 3420.29 | Midline Triangle |
| 3420.41 | Dance of the Area Bisectors |
| 3420.43 | Regular Triangle, Regular Hexagon |
| 3420.61 | Two Triangles and a Square |
| 3420.71 | Hard Triangle Area |
| 3420.73 | Crazy Baseball Diamond |
| 3420.81 | Intersecting Medians |
| 3440.12 | Billy the Goat |