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1 Pre, p.  xiv|           other twenty-one writers contained in this volume. It was originally
2   8, p.  197|      right-angled triangles, being contained by four equilateral ones.
3   8, p.  198|  forty-eight triangles,  ./. being contained by eight equilateral ones.
4   8, p.  198|            an octahedron, which is contained by eight equilateral triangles,
5   8, p.  198|            in all. But water being contained by an hundred and twenty,
6   8, p.  198| forty-eight triangles, and is also contained by six equilateral triangles,
7   8, p.  198|            a cube. For the cube is contained by six squares, each of