You mean something like this :) https://www.geogebra.org/m/cWfHr7pk https://www.geogebra.org/m/cWfHr7pk You could turn it into a custom tool in GeoGebra if you

You mean something like this :) https://www.geogebra.org/m/cWfHr7pk https://www.geogebra.org/m/cWfHr7pk You could turn it into a custom tool in GeoGebra if you think that would be helpful. Also worth noting that you can do angle construction in GeoGebra in other ways (for example, just divide the angle by 3 instead of 2!)