Geometer's Sketchpad Tools

1. Centroid

2. Orthocenter

3. Circumcenter

4. Circumcircle

5. Incenter

6. Incircle

7. Incircle and Incenter

8. Excenters

9. Excircles

10. Excircles and Excenters

11. Incircle and Excircles with centers

12. Medial Triangle

13. Orthocenter, with Mid-segment Triangle

14. Orthic Triangle

15. Pedal Triangle

16. Center of Nine Point Circle

17. Nine Point Circle

18. Trisecting a line segment

19. Equilateral Triangle, give a side

20. Square, given a side

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

23a. Triangle Centers with Euler Line

23b. Triangle Centers with Euler Segment

24a. Circle Tangent to Two Given Circles 1

24b. Circle Tangent to Two Given Circles 2

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Write-up by Robert Childres.