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A toy construction kit, particularly a three-dimensional puzzle, including a plurality of generally regular polygonal construction elements that can be releasably assembled, through tab-and-slot, hinged interengagement, to form a toy construction. Each of the construction elements is formed from a r

A toy construction kit, particularly a three-dimensional puzzle, including a plurality of generally regular polygonal construction elements that can be releasably assembled, through tab-and-slot, hinged interengagement, to form a toy construction. Each of the construction elements is formed from a resiliently flexible sheet of plastics material, for example, polypropylene. A single toy construction may include construction elements in regular polygonal shapes of triangles, squares, and pentagons with all of the sides of the elements having, the same length. The tab-receiving slots of the tab-and-slot engagement may be provided in flanges formed integrally with and projecting from the sides of the construction elements. Advantageously, a plastics hinge joining the tab to the side of one of the elements may be set back from the side of the element and joined thereto by short cut portions, the slot formed in the flange on the other element may be stood out from the side of the other element by a similar distance, and the ends of the slots may be arcuate to join the slot to the hinge. In the toy construction, the tab and flange will overlap their respective opposing elements on the same side of the joint.

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[ It is claimed and desired to secure by Letters Patent:] [1.] A toy construction kit providing a threedimensional puzzle, the kit comprising a plurality of construction elements configured to be releasably assembled in both a modular and an interchangeable manner to form a construction, each of the

[ It is claimed and desired to secure by Letters Patent:] [1.] A toy construction kit providing a threedimensional puzzle, the kit comprising a plurality of construction elements configured to be releasably assembled in both a modular and an interchangeable manner to form a construction, each of the construction elements being formed from a resiliently flexible sheet of plastics material, and each of the construction elements comprising a substantially rectilinear shape generally in the form of a polygon, which shape is provided with a tab formed integrally with the shape on one side of the shape and which is connected thereto by a plastics hinge and a slot adapted to receive the tab and formed on another side of the shape, which tab is configured to cooperate with the slot on another of the construction elements for releasably joining the construction elements one to another in a fitted position, and to form a flexible hinge at a joint therebetween, the tab and slot being shaped such that, in the fitted position, the tab is releasably retained in the slot for forming the joint between the two sides of adjacent construction elements, wherein the tab-receiving slots are formed in flanges which are formed integrally with, and which project from, the sides of the shapes, and wherein the plastics hinges joining the tabs to the elements are each set back from their respective side, and wherein the slots formed in the flanges each stood out from their respective side by a similar distance and the flanged side includes a protruding portion which, in the fitted position, overlaps the side of the adjacent construction element.