geometry graphing question

[baseball-fanatic]

Why are the quadrants on a graph numbered as Roman Numerals instead of by "1", "2", "3" and "4"?

 

[tkhunny]

My favorite answer, "Convention".

Someone numbered them that way, once, and it seemed like a good idea so people could communicate ideas, so it stuck.

 

[stapel]

Perhaps this convention began with George A Wentworth...?

Eliz.