How to construct Euler's line???

Anybody know any good websites or can just explain how to construct the orthocenter centroid and whatever else is in Euler's line????? Im Soooooo confused!!!!

1 answer

Euler's line:
http://en.wikipedia.org/wiki/Euler_line

Orthocentre:
http://constructions.homestead.com/files/ortho/orthocenter_construct.htm

Centroid:
http://constructions.homestead.com/files/centroid/cons8.htm

nine point circle:
http://www.mathsisgoodforyou.com/topicsPages/circle/ninepointcircleconstruct.htm