| It is an asymmetrical oval slice of toroid, tilted out of the ground towards the south to catch the sun's heat. |
| When stretched at fixed displacement, the toroid undergoes a transition from an ellipse to a tadpole regime. |
| The geometry of the house is based on that of an elliptical toroid. |
| The toroid adds additional optical power in the vertical direction to bring the two focal planes together. |
| We then look at the case of a toroid compressed in the plane of the toroid. |
| The roof shapes are engaging, seemingly free-form, but are actually segments of a toroid. |
