Dialogue

 1 Intro|      which forms the half of an equilateral triangle. Let us then choose
 2 Intro|    solids are formed—first, the equilateral pyramid or tetrahedron;
 3 Intro|    scalene, which is half of an equilateral triangle. By the combination
 4 Intro|        sides are formed by four equilateral or twenty-four scalene triangles.
 5 Intro| triangles, which unite as eight equilateral triangles, and make one
 6 Intro|        having twenty triangular equilateral bases, and therefore 120
 7 Timae|         third triangle which is equilateral; the reason of this would
 8 Timae|     point as a centre, a single equilateral triangle is formed out of
 9 Timae|         six triangles; and four equilateral triangles, if put together,
10 Timae| triangles, which unite as eight equilateral triangles and form one solid
11 Timae|     them included in five plane equilateral triangles, having altogether
12 Timae|      bases, each of which is an equilateral triangle. The one element (
13 Timae|         centre, and forming one equilateral quadrangle. Six of these
14 Timae|   having six plane quadrangular equilateral bases. There was yet a fifth
15 Timae|        out of either, the plane equilateral quadrangle has necessarily
16 Timae|      more stable basis than the equilateral triangle, both in the whole