[b]Mocarabes[/b] or [b]Muqarnas[/b] ceilings are one of the most intricate and beautiful resources on islamic architecture at Spain. We know how to construct them by some XVI century treatises. [br][br]They are formed from [b]4 basic prismas[/b] with sides ratio 7/5 (aprox. [math]\sqrt{2}[/math]) and performed with some curved cuts in order to form 8 basic pieces or [b]adarajas[/b].

Thanks to Geogebra 3D, we can have a model on some pieces. The purpose is to assemble them after in a part, or the whole, ceiling. The pieces is a work of [b][i]Bernat Ancochea[/i][/b]. Many thanks for their friendly help.[br][br]If GeoGebra can support in the future the possibility to export 3D files in STL format, we can have also a plastic model for it from GG.