If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

To log in and use all the features of Khan Academy, please enable JavaScript in your browser.

Worked examples

0 energy points

CA Geometry: More proofs

7-10, more proofs (10 continued in next video). Created by Sal Khan.