•  Classifying Triangle: http://www.youtube.com/watch?v=7KqFwUSot7k&safe=active

•  Isosceles Triangle: (example problem: http://www.youtube.com/watch?v=Tqh7RGWd480&safe=active)

•  Transformations (reflections, rotations, translations, and dilations):  Start here and you may find it helpful to check out this video.

•  Area and Circumference of Circles

•  Triangle angle sum theorem:  (with algebra video:  http://www.youtube.com/watch?v=eoe8bpowBK4&feature=relmfu&safe=active) (proof: http://www.youtube.com/watch?v=T8z9KqlA6A8&feature=related&safe=active)

•  Tessellations:  view the Wiki page here and you may find it helpful to check out this video. 

•  Nets:  This site has a lot of information and videos on nets.

•  Geometric Probability:  Start here.  Here is a video.  You can also practice by using this Activity Sheet.  

•  Pythagorean Theorem:  Here is a basic overview on how to work out these types of problems.  This theorem is one of the most popular theorems in math and if you consider yourself a math person, you should become an expert on the theorem.  Pythagorean Theorem’s Wiki page will help you become an expert.

•  Determine if 3 side lengths can make a triangle:  This will show you how to check.

•  Platonic Solids:  This site is a great place to start.  Here is its Wiki page.  YouTube hosts a fancy video for the Platonic Solids here.  Here is a video on how you can construct the Platonic Solids using gum drops and tooth picks.

•  Surface Area:  Start with this basic tutorial.  This tutorial site goes a little more in depth.

•  Relationships of Angles:  Instructional PowerPoint on complementary, supplementary, corresponding, alternate interior, alternate exterior, and vertical angles.  Here is an assignment to practice with.

•  Measuring Angles with a protractor:  Try this site out.