Triangle Inequality Theorems--Within Single Triangle
This video covers how to put the angles in a triangle in order from biggest to smallest, within a single triangle. a
Triangle Inequality Theorems--SSS, SAS Between Triangles
This video covers the theorems that compare triangle side lengths between two different triangles. Geometry being designed to make things confusing for you, naturally these two theorems have the exact same name as congruency theorems you already know: SAS and SSS. Ain't geometry great!
Distance from Points to Lines & Planes
The shortest video on the site. I could explain what it covers, but it would be faster for you to just watch the darned thing!
If you do not have an account, you should get one, because it is awesome! You can save a playlist for each test or each chapter, and save your "greatest hits" into a "watch right before the final" list (not that we recommend cramming, but when in Rome...)