Copy of rotation
You can use this to investigate how 2D shapes are rotated around a centre of rotation. Try moving the centre of rotation and see if you can predict where the shape will move to.
Midsegment (drag point D)
A Common Generating Set of Equations
Introduction to GeoGebraScript
Missing Square? Extra Square?
Linking Systems of Linear Equations and Vectors
Midsegment of a triangle exploration
Chapter 3 Activity 2
Tetrakis hexahedron. Vertices 14.