Question

How to find the orthocentre

Answer 1

http://en.wikipedia.org/wiki/Altitude_%28triangle%29

Answer 2

a word to word help

Answer 3

Draw height on each side and the point where they connect is the orthocentre?

Answer 4

@laurity is correct.
This site also has a very good explanation of the various "centers" of a triangle: http://www.mathopenref.com/triangleorthocenter.html

Answer 5

i am on that site..so how do you find the altitude?

Answer 6

the altitude is just the perpendicular height, e.g.:

You do that for all 3 sides, and the point where they intersect is the orthocenter