This is a prototype of
JavaSketchpad,
a World-Wide-Web component of
The
Geometer's Sketchpad.
Copyright ©1990-1997 by Key Curriculum Press, Inc. All rights
reserved. Portions of this work are being funded by the National
Science Foundation (awards DMI 9561674 & 9623018 ).
This simple iris is created by a series of nested pentagons, each
of which is rotated by the same offset within its circumscribing
pentagon. Dragging (or animating) point A varies the
rotational offset, opening and closing the iris.
Return to the
JavaSketchpad Gallery.