| 摘要 |
A three-dimensional article produced from sheet material and comprising a frame unit having a plurality of outer sides made of sheet material each of which having a different angular disposition is provided. First and second longitudinal ends of the frame unit are interconnected by a female fastener embedded in the first end and by a male fastener introduced through the second end and coupled with the female fastener. A kit for assembling the three-dimensional article comprising a plurality of expandable separate members made from sheet material and set in a flat condition is also provided.
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