| geometry | Projection | |
| geometry | Cross points of circles | |
| geometry | Cross points of a line and a circle | |
| geometry | Distance fo a point and a line | |
| geometry | Segment intersections | Line sweep algorithm | |
| geometry | Cross point of 2 segments | |
| geometry | Vector clockwise | |
| geometry | Polygon-Point Containment | |
| number-theory | Greatest Common Divisor | |
| number-theory | Prime Numbers | |