Creative Commons Attribution-Share Alike 4.0 truetrue English Concave isotoxal hexagon Wikimedia username: Tomruen URL: https://commons.wikimedia.org/wiki/user:Tomruen...
Creative Commons Attribution-Share Alike 4.0 truetrue English Concave isotoxal hexagon compound URL: https://commons.wikimedia.org/wiki/user:Tomruen author...