Section 2.1 Introduction
You can access Geogebra apps in a few ways. Click on the Calc button near the top of this page to open a Geogebra window on the right of this screen. This can be handy from time to time. You can also open the Geogebra apps at their website geogebra.org.
Lots of good Geogebra demonstrations are available in their gallery. We will use some demonstrations specific to this text as well. For class activities, it will be best to use Geogebra from their website, or from a file provided in these pages, rather than from a Geogebra file embedded on this page. But we embed one file here to demonstrate that Geogebra has been built to offer us dynamic compass and ruler constructions.
The Geogebra file embedded below can be viewed (and edited) externally here.