There is a similar app with a set of 4 different problems at [url=https://www.geogebra.org/m/ntufcjw4]https://www.geogebra.org/m/ntufcjw4[/url].[br][br]Contact us at [url=mailto:ptierneyfife@edc.org]ptierneyfife@edc.org[/url] if this resource should be updated, or with questions or suggestions. We appreciate your help maintaining the quality of this resource.