I have a 92g bowfront corner tank, its 36 inches front to back, 4 feet point to point but gets narrower of course, and 24 inches tall.
I love the tank lol only issue is with it being 36 inches front to back its hard to reach in the back even standing on a ladder. I also have a 60g hexagon, which is 14.5 inch on each panel 25 inches front to back "panel to panel" and 28 inches point to point on each of the 6 points.
So its extremely girthy