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A construction set is comprised of a plurality of hollow 26 faceted joint elements with the facets being arranged in a selected orientation and having an opening, located in each facet, which is configured for receiving an elongate strut for interconnecting a plurality of the joint elements to form

A construction set is comprised of a plurality of hollow 26 faceted joint elements with the facets being arranged in a selected orientation and having an opening, located in each facet, which is configured for receiving an elongate strut for interconnecting a plurality of the joint elements to form a three-dimensional framework. The struts have clip fasteners at each end adapted for snap fitting engagement within the openings such that they are not separable merely by application of tensile force to the struts; and locking means are provided for preventing inadvertent disengagement of the struts from the joints.Due to the particular geometrical configuration of the joint elements, the openings and the clip fasteners both are elongate in order to provide maximum clip strength without sacrificing the structural integrity of the joint elements. Panels configured for spanning any predetermined array of the struts have flexible tabs adapted for releasably snap fitting over the struts in a manner permitting perpendicular or diagonal joinder of adjacent panels to a common strut, forming either inside or outside corners.

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