This writeup is
a library of scripts with links to various GSP scripts
by
Samuel Obara
Centroid
Orthocenter
Circumcenter
Circumcircle
Incenter
Incircle
Medial
triangle
Orthic
triangle
Pedal
triangle
Center
of Nine point Circle
Orthocenter, mid-segment triangle
Triangle Centers (H, G, C, I)
Triangle
Centers (H,G,C,I) with Euler line
Pentagon
given side
Hexagon
given side
Octagon given side
Dodecagon
given side
Divide
a segment AB into two parts that form a golden ratio
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