The [url=https://en.wikipedia.org/wiki/Great_Mosque_of_Diyarbak%C4%B1r]Great Mosque of Diyarbakkir[/url] has got a long buillding history. The mihrab is an exaple of a 8:2 star with two starpoints on the edge of the muqarnas.[br]Next applet shows as well the plan by Shiro Takahashi as the drawing by Fatin Uluengin.[br]On both pictures you can see that around the central 8:2 star circles of 8-pointed star are created. In the lines drawn by Shiro Takahashi you can see that these stars form isolated islands along the lines that mark the layers of the muqarnas.

On the next picture and the frontal drawing you can see that the 8-pointes stars on het plan form circles of stalactites in the realisation of the muqarnas.

Next applet shows both circles of stalactites in the plan of the muqarnas.