convex-concave square tessellation 凸凹方正

paper in the same size

the left one is hydrangea with a little change in center;

the right one is similiar to one of my old model:

www.flickr.com/photos/119967028@N08/22056557411/in/datepo...

based on this:

www.flickr.com/photos/georigami/5105586902/in/faves-27510...

also this with cp:

www.flickr.com/photos/modular_dodecahedron/34534259074/in...

 

 

the backlit of a model similiar to the lower one:

www.flickr.com/photos/orihouse/905596588/in/faves-7900467...

 

Here is a comparasion of four models:

www.flickr.com/photos/85238302@N05/26315438026/

Done