teslax
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No - they were triangles from start however some edges were turned invisible to appear as quads or n-gons. In #dsMax when you work in "edit mesh" mode you work on "polygons" (3,4 or more sides) but they're still triangles.
Take a look at picture below - it's quad poly however 3ds max already divided it to triangles since I'm working in "mesh edit" mode.
Actually, you can represent ANY surface by multiple triangles (and in extension, any volume by multiple tetrahedra).
Thats why even if you work with them as other geometry entities, it is easier to render and process them as triangles anyway.
I see the point, thanks for explaining it to me! I see another reason why you don't want to have too much tris.
Usually I'll just try my best to avoid tris and n-gons in model because there might be some problem with the mesh smoothing later on in the 3d program.
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