I have ben wanting to design Coplanar for a long, long time. While I've made great use of existing mathematics visualization software, there has never been a tool designed specifically for exporting math diagrams to worksheets and exams for use in the classroom. Coplanar has everything you would expect to see in geometry app and more: a LaTeX editor, a built in tool for adding congruency marks and parallel marks, and perhaps its most practical feature: a growing number of built in diagrams, available with the touch of a button.
Right now, Coplanar is brand new! In fact, it is still on its promotional initial release sale until September 16, right now 50% off. An FAQ is still in the works.
Do you have a feature you would like to request? Send me an email at firstname.lastname@example.org