Leave a Review GeoGebra Geometry
IPad user/Physics major re-studying geometry for fun
I’m going through Schaum’s Outline of Geometry, working many of the exercises. A great (to me) theorem I came across says that for any triangle, the medians (midpoint-to-vertex) will all intersect and will be partitioned by that intersection into 2 segments, and those segments will have a 2:1 length ratio. I found that disturbing and fascinating and wanted to “prove it,” which I eventually did using just two medians, making a midpoint-to-midpoint line segment, and then considering (what else?) similar triangles.
But then I wanted to see it on a computer program (and using BASIC to make graphics is disgustingly no longer a viable option in this day and age), and I tried Desmos but that was brutal (you have to come up with 6 line segment equations for each triangle). So I looked at geometry apps, found this one, and voila! It was great! I can make as many examples as I want, and it will measure angles and lengths and show everything I want to show.Show lessBrian the Lion
Developer Response
Thanks a lot for this great review!Amazing - and saving files was easy…
First - if you are interested by and want to not just learn, but really understand geometry then this app is for you. As a curious individual - I learn by experimenting and proving to myself things… and this helps by converting the drawings in to algebra and vice versa.
Everyone seems to complain about ‘saving’ files. There is an export button - you export the file and in the iOS share sheet - save it to some cloud store - I use iCloud. Then open from iCloud by tapping the file and then, again, via the share sheet, selecting the app. Piece of cake.Show lessYhftenji
Great Tool!
For a few years now, I've been doing visual coding in the P5.js and Processing environments. Just as a hobby, really. I'm very particular about the visuals, and I sometimes want to draw a complex geometrical shape. Normally, this would mean switching out the numbers until it looked just right, but I started using Geogebra Geometry to sketch them out and it's been working a charm! I only recently discovered how it doubles as a graphing calculator, too. The only improvement I would make is a small interaction tweak: when "snap to grid" is turned on, I really expected it to be more..."magnetic"? Fix to grid works, but if you want to use snapping, you need steady hands. It's not very accessible feeling.Show lessAeon II