Angles: Similarity and Congruence
Similar Triangles
http://www.khanacademy.org/video/similar-triangles?playlist=Geometry
Learn about similar triangles.
Introduction to Angles I
http://www.khanacademy.org/video/introduction-to-angles?playlist=Geometry
Learn and practice basic angle relationships. Includes complementary and supplementary angles.
Introduction to Angles II
http://www.khanacademy.org/video/angles--part-2?playlist=Geometry
A continuation of the previous video. Includes opposite angles.
Introduction to Angles III
http://www.khanacademy.org/video/angles--part-2?playlist=Geometry
A continuation of the previous video. Includes transversal intersect of parallel lines.
The Angle Game
http://www.khanacademy.org/video/the-angle-game?playlist=Geometry
Practice finding angle measurements using complementary, supplementary, opposite, and transversal angles.