**Eric Gold**

**Assignment 5**

**GSP Script Tool Library**

Write-Up #5. Create a file on
your home page with links to various GSP script tools you have produced. The
write-up will be a library of GSP files with script tools..

The creation of a personal
library of GSP script tools for doing constructions you might use several times
is an efficient way to organize and store your work. As we have observed
students working on problems in our classes, we have been surprised by the
number of times we have seen someone repeat a complete construction. Using a
script tool, for example, to construct the circumcircle
4 times makes more sense than repeating the construction 4 times from scratch
on the same figure.

**Making a script tool.** The
simplest way to make a script in GSP 4.02 is to complete a desired
construction, select all (either from the menu or by drawing a box around it),
and then going to make the script tool using the script tool control in the
toolbox. You may want to annotate the comment section to a) help identify
"given" objects for the script tool and b) to indicate whose script
tool it is. To save a script tool so it is always available on YOUR computer,
it must be saved to the TOOL FOLDER in the folder containing the Sketchpad
application. To make it available in your web document, your save the file to
your html document folder and make a link to it as a GSP helper application.

Here is a list of script
tools we think would be worth saving and using in your work with GSP. We are
sure you will add to the list as you develop more experience with this
application.

**GSP Script Tools**

1. Centroid

2. Orthocenter

3. Circumcenter

4. Circumcircle

5. Incenter

6. Incircle

7. Medial, or Auxiliary, Triangle

8. Orthocenter, Mid-segment
triangle.

10. Pedal triangle – construct
triangle vertices and point within the triangle

11. Center of Nine point circle

12. Nine Point Circle

13. Trisecting a line
segment

14. Equilateral triangle, given a
side

15. Square, given a side

16. Isosceles triangle,
given base and altitude

17. Triangle Centers (H, G,
C, and I)

18. Triangle Centers with
Euler Line

19. Locus of vertex of a
fixed angle that subtends a fixed segment.

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

21. Pentagon, given a
radius.

22. Pentagon, given a side.

23. Hexagon, given a side –
construct the desired side

24. Octagon, given a side.