GeoGebra Samples

GeoGebra is a really cool free application that lets you explore algebra and geometry. Here are some examples showing algebra and geometry.

Applet showing the relationship between the coefficients of a quadratic equation and its graph.
Click on the image to launch the applet.

Applet showing the construction of a triangle's circumcircle.
Click on the image to launch the applet.

Applet showing a dynamic proof of the Pythagorean theorem.
Click on the image to launch the applet.