## 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!

- Introduction to similar triangles
- Similarity postulates
- Determine whether triangles are similar using the AA criterion
- How to determine whether two triangles are similar (example)
- Determine whether triangles are similar using the SSS criterion
- How to find a missing measure with similar triangles (example)
- Find missing sides of similar triangles (basic)
- How to solve similar triangles where the same side plays different roles (example)
- Find missing sides of similar triangles (advanced)