Domes over windowed drums of cylindrical or polygonal shape were standard after the 9th century. The building's bulk is mitigated by numerous setbacks and its polygonal shape. The town has a highly irregular polygonal shape. The rim has a discernibly polygonal shape, although overall it remains circular. The wide outer rim of Azophi has a somewhat polygonal shape with rounded corners. The rim of Abenezra has a noticeably polygonal shape, with uneven wall segments. The eastern projection has a polygonal shape, with a semi-pyramidal roofline. The lantern has a polygonal shape and is 6 feet and 10 inches in diameter.