Alternate Interior & Exterior and Corresponding Angles
http://study.com/academy/practice/quiz-worksheet-types-of-angles.html
http://www.shodor.org/interactivate/activities/Angles/
http://www.regentsprep.org/regents/math/geometry/gp8/pracparallel.htm
http://www.mathgames.com/skill/8.46-transversal-of-parallel-lines
http://study.com/academy/practice/quiz-worksheet-types-of-angles.html
http://www.shodor.org/interactivate/activities/Angles/
http://www.regentsprep.org/regents/math/geometry/gp8/pracparallel.htm
http://www.mathgames.com/skill/8.46-transversal-of-parallel-lines