Curve of pursuit
Aristarchus' mistake
Perpendicular fitting
Archimedes Pi
Cartesian and non-Cartesian cars
Dragging test
A rectangle, rhombus, parallelogram and trapezium.
The main feature of dynamic (or interactive) geometry is that you should be [br]able change a geometrical object without changing the significant properties of the object. In the applet above, you can change the shapes but they are always a rectangle, rhombus, parallelogram and trapezium.
Interactive GeoGebra logo
Drag the points!