The Invisible Drop

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This simple corrugated pattern, folded from a hexagon, reminds me of the waves made by a water droplet falling onto the surface of water.

Note that this model is folded from a hexagon rather than from a pentagon. One 60° “sector” of the hexagon is folded in half, so only five sides remain visible. This is why you get the waves: the model would remain flat if one side was not tucked underneath. In similar fashion, you can get any N-gonal analog of this model if you start from an (N+1)-gon.