"Golden Section Postcard (series)"

A postcard where a golden polygon outlines the golden section within a 5:9 proportion canvas.
      
A postcard where a golden polygon outlines the golden section within a 5:9 proportion canvas.
A postcard where a golden polygon outlines the golden section within a 5:9 proportion canvas.

"Golden Section Postcard (series)"

A postcard where a golden polygon outlines the golden section within a 5:9 proportion canvas.