how to geometry in solidwork

https://forum.solidworks.com/thread/27184

http://help.solidworks.com/2010/English/SolidWorks/sld2demu/sld2demu/ROTATE.htm

http://www.cfluid.com/bbs/viewthread.php?tid=59015

http://web.rfeda.net/dp-bbsthread-771568.html
http://web.rfeda.net/dp-bbsthread-774386.html
http://www.baisi.net/viewthread.php?tid=670149