Novel building shapes are possible with Space Frame designs by combining the basic geometries shown here. All of these can also be altered to suit your aesthetic preference or to align with adjacent buildings or support locations. Building design often develops around rectilinear spaces & the benefits of curved roofs & walls can be overlooked.
Modern space frame design methods allow us to expand the edges of domes (or any curved shape) to land on square, rectangular or any plan geometry. Advanced spaceframe manufacturing & construction techniques have made curved & complex shapes very competitive against more traditional linear roofs & walls.