http://www.khanacademy.org/math/root/logical-reasoning/e/con...
http://www.khanacademy.org/math/arithmetic/factors-multiples...
http://www.khanacademy.org/math/geometry/basic-geometry/e/co...
http://www.khanacademy.org/math/geometry/basic-geometry/e/or...
http://www.khanacademy.org/math/geometry/basic-geometry/e/pe...
http://www.khanacademy.org/math/geometry/angles/e/exploring_...
http://www.khanacademy.org/math/geometry/angles/e/congruent_...
as well as made some a handful of improvements to the existing exercises.
http://www.khanacademy.org/math/root/logical-reasoning/e/con...
http://www.khanacademy.org/math/root/logical-reasoning/e/con...
http://www.khanacademy.org/math/arithmetic/factors-multiples...
http://www.khanacademy.org/math/geometry/basic-geometry/e/co...
http://www.khanacademy.org/math/geometry/basic-geometry/e/or...
http://www.khanacademy.org/math/geometry/basic-geometry/e/pe...
http://www.khanacademy.org/math/geometry/angles/e/exploring_...
http://www.khanacademy.org/math/geometry/angles/e/congruent_...
as well as made some a handful of improvements to the existing exercises.