<p>The invention is a new seating system with one or more substantially horizontal or inclined seats (O) or supporting surfaces, and/or one or more substantially vertical or inclined backs (V), comprising eight prismatic modular elements or modules (Ti) with opposite parallel base faces (Ti) in the shape of a right-angled isosceles triangle, each module (Ti) being joined to at least one adjacent module (Ti) at the level of one corner (T4), and wherein each module (Ti) rotates around said connection corner (T4) relative to the module (Ti) to which it is joined.</p>
