Why do game engines convert models to triangles compared to keeping it as four side polygon

Posted by Grant on Game Development See other posts from Game Development or by Grant
Published on 2011-03-09T01:19:44Z Indexed on 2011/03/09 8:19 UTC
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I've worked using maya for animation and more film orientated projects however I am also focusing on my studies on video game development (eventually want to be either programmer or some sort of TD with programming and 3D skills). Anyways, I was talking with one of my professor and we couldn't figure out why all game engines (that I know of) convert to triangles. Anyone happen to know why game engines convert to triangles compared to leaving the models as four sided polygons? Also what are the pros and cons (if any) of doing this?

Thanks in advance.

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