All of the polygons on this plane are affine heptagons. They can be used to tile a plane by starting out with three of them having a common vertex. This example shows only the first four levels of expansion. The colors hint at the 3-fold symmetry. See my [Hyperbolic Heptagonal Hydrangea](https://skfb.ly/RTQr) model for more information on affine heptagons.