An alternative is the wedge. The number of poles can be 2 or 3 and can easily be made segmented so as to fit in a car. A 'bell' can be added to expand space, though it makes the pattern a bit more complicated. Square or rectangular tends to have a lot of usable space depending on the size. Depending on the size and any slant of the walls most of it is usable for walking or storage.
Wind tends to stretch it out of shape more easily though.
When doing the patterns, you have simple angles to consider. Advantages tend to be better stability in wind, fabric stretch tends to be more even and the tension tends to keep it to a minimum. They just look cool, like all the paintings. Yurts are beyond the scope of this article. They are in a class by themselves and are more mobile homes than pavilions as I see it.