If there is, it's well hidden. This page and https://www.geogebra.org/m/xkMPKQnK https://www.geogebra.org/m/xkMPKQnK are all I can find online. Would be nice t

If there is, it's well hidden. This page and https://www.geogebra.org/m/xkMPKQnK https://www.geogebra.org/m/xkMPKQnK are all I can find online. Would be nice to know who originated the idea.