| 摘要 |
PCT No. PCT/GB88/00017 Sec. 371 Date Aug. 1, 1989 Sec. 102(e) Date Aug. 1, 1989 PCT Filed Jan. 12, 1988 PCT Pub. No. WO88/05329 PCT Pub. Date Jul. 28, 1988.A set of building blocks having two subsets of rhombohedral blocks (B,Y) having respectively dihedral angles of 72 DEG and 36 DEG so that the faces of both subsets of blocks are identical. Each of the faces incorporates magnets (11) whereby juxtaposed faces of any two blocks will stick together magnetically in a predetermined angular orientation.
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