sure but then you have to calculate the angle between each hub and spoke and cut the edges of the hub and boards to allow for flush angles when you screw them together. the whole idea behind the hinge is the angle will just naturally fall into place as you're building the structure.

Dumb of me to distract. With hinges you can also build flat on the ground (as with a paper-with-flaps layout), then start to form the shape, "latching" while you go.