Sunday, December 20, 2015

Triangle similarity (copied from Khan Academy)

Triangle similarity

This tutorial explains a similar (but not congruent) idea to congruency (if that last sentence made sense, you might not need this tutorial). Seriously, we'll take a rigorous look at similarity and think of some reasonable postulates for it. We'll then use these to prove some results and solve some problems. The fun must not stop!

Trigonometry with right triangles (copied from Khan Academy)