GeoGebra Geometry

GeoGebra

About this app

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

We’d love to hear from you: send us your questions or feedback via Twitter @geogebra or to [e-mail]

Ratings and reviews

Great app! Can't believe this is free. So many tools I've probably used less than half of them. Some things I'd love to see: Dark mode. Please, my eyes! More customization, such as saving multiple custom settings, and custom tool groups. Ability to minimize the tool menu while still using a tool! More integrated layer functionality An easy way to redefine an object by it's position, staying in the same place but detaching from any connected construction

Seems like a powerful package for visually constructing calculations, but it's got a learning curve: you can't just click somewhere, but have to really know what you're doing with that click. Sketchometry (web version) is much easier to get started with, but its drawing tools are put away in inconvenient, non-intuitive fragments, making you click a lot hence-and-forth.

Sorta works. Undo button makes the screen jump around it also doesn't actually undo anything (at least I haven't been able to consistently make it do that). Trying to use compass on a segment followed by a point often doesn't do anything. Measuring angle between three points works but doesn't when selecting two segments. The show hide labels function sometimes randomlly turns everything to show again after working for a while. A plethora of bugs such as these. I would recommend a different app

What's new

• New command: PieChart - create pie charts for lists of frequencies
• Bug fixes and lots of improvements under the hood