every time i have ever gont to make a five faced shape it has said that it wasnt possible. saying something about an FGon… why is it called an fgon and not a pentagon? why cant you make it…
and finally how is it possible to make the ilusive FGon in this image
An FGon is a “Fake”-Gon. It’s used to make a mesh look less confusing by hiding edges, but without changing the shape of the mesh or what it looks like rendered. So you can select a number of faces, hit F, and select Make from the FGon menu.
What those answers really mean is that Blender doesn’t actually support faces with more than four edges - but it will allow you to make FGons which look like faces with more than four edges but really, Blender just hides the internal edges it creates. So a pentagon would actually be a quad face joined to a tri face.
I believe you should try to avoid them in organic (subsurfed) modelling.