Easily construct triangles, drag points, draw parallel lines, intersect circles, save and share your results. Millions of people around the world use GeoGebra to learn mathematics and science. Join us!

* Create constructions with points, lines, circles, polygons, and angles
* Explore interactive geometry by dragging points
* Measure lengths and areas
* Transform shapes by mirroring, rotating and dilating them
* Try advanced constructions with conics and locus lines
* Investigate construction steps to get deeper understanding
* Search for free learning activities directly from our app
* Save and share your results with others

Visit www.geogebra.org to learn more and find all our free GeoGebra apps. We’d love to hear from you: send us your questions or feedback via Twitter @geogebra or to [email protected]