good sizes for people, terrain?

[JavaMan]

HI everyone,
I am making some terrain, but I am a little unsure on what is a "good" size for things in a game. I would like to represent the ground under a human with two triangles that form a square. What do you think is a "good" length for one of the sides of the square? What is usually used for something like that? Also, how "tall" should a person be?

I haven't ever done any game programming, and I don't really know about what is good sizes for stuff like this. Any sites describing this can help, or any tips! Thanks

Jman

[EgonOlsen]

Personally, i prefer sizes in the range of 10 world units per square. It works for me, but it doesn't have to be the best solution in all cases. Just don't make them too small or too large, because you'll run into accuracy and rounding problems then. Anything in between should be fine.

[JavaMan]

Ok, thanks for the suggestion. 

Jman