by Donny Thurston

Here I will provide some scripts that can be used in GSP as a shortcut for certain constructions. To use them, simply download the file and, when opened, access the tool in the script menu. If you place this file into your GSP tool folder, then it can be accessed in any GSP document.

## GSP Script Tools

## 1. Centroid

## 2. Orthocenter

## 3. Circumcenter

## 4. Circumcircle

## 5. Incenter

## 6. Incircle

## 7. Medial triangle

## 8. Centroid, Medial triangle

## 9. Orthocenter, Mid-segment triangle

## 10. Orthic triangle

## 11. Pedal triangle

## 12. Center of Nine point circle

## 13. Nine Point Circle

## 14. Trisecting a line segment

## 15. Equilateral triangle, given a side

## 16. Square, given a side

## 17. Isosceles triangle, given base and altitude

## 18. Triangle Centers (H, G, C, and I)

## 19. Triangle Centers with Euler Line

## 20. Locus of vertex of a fixed angle that subtends a fixed segment.

## 21. Divide a segment AB into two parts that form a golden ratio.

## 22. Pentagon, given a radius.

## 23. Pentagon, given a side.

## 24. Hexagon, given a side.

## 25. Octagon, given a side.

## 26. Parabola by Directrix and Focus

## 27. Two Circles Tangent to a Circle and a Line at point P

## 28. 5 iterations of triangles created with the angle bisectors of a triangle within a circle.