lines and angles

1. http://us.attanolearn.com/excel/4663_lines-angles.jsf
2. http://us.attanolearn.com/excel/MyHome.jsf?show=cbse-vii
3. http://us.attanolearn.com/excel/MyHome.jsf?cid=142525
4. http://www.homeschoolmath.net/teaching/g/angles.php
5. http://video.answers.com/learn-about-angles-of-parallel-lines-99166367
6. http://math.about.com/library/weekly/aa031503a.htm
7. http://www.dadsworksheets.com/v1/Worksheets/Basic%20Geometry.html
8. http://www.ezschool.com/EZSheets/Geometry/Lines_Angles/index.html
9. http://www.superteacherworksheets.com/symmetry.html