Ball, W. W. Rouse (Walter William Rouse), 1850-1925 · London, Macmillan · leaf 277
colours are used we get a set of twenty-four different dominoes, and these can be put together (preferably in a shallow box cut to the right size) to make a regular hexagon. Innumerable con- ditions may be imposed. For example, we may suppose that it is required to fit the dominoes into the box so… … naturally arises, and leads to various other problems. If our dominoes are right-angled triangles we get a hexagon arrange- ment of adifferent shape. Further we can play with sets selected from a particular full set and arranged in other geometrical figures. Similar problems arise from the use of…
