We can use Geometer's Sketchpad 4.06 to construct some very useful script tools. Click on any of the links below to view and use these tools.
Orthocenter, Mid-segment triangle
Equilateral triangle, given a side
Isoceles triangle, given base and altitude
Triangle Centers (H, G, C, and I)
Triangle Centers with Euler Line
Divide a segment AB into two parts that form a golden ratio.