| 摘要 |
An apparatus comprising a plurality of similar to identical components (10) is disclosed. Each component (10) has a pair of opposed, mutually inclined edges (14, 15) and is provided on those edges with a projection (16) or socket (17) to interconnect adjacent components (10). The shape and dimensions of the components (10) are such that ten said components when interconnected form a closed, rotationally generally symmetrical, planar figure. |
