JAVA worksheet: arrow, invariant line

Use the RESET button (top-right) to go back to START. This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com
Use the RUN/PAUSE button (bottom-left) to RUN the animation.
When the animation has finished,
RESET, then DRAG point A to a new position, RUN the animation again;
OR: don't RESET but DRAG point A to change the direction of the invariant line.

Created with GeoGebra