Mathematical_Recreations-Kraitchik-2e

Geometric Recreations ~05
have edges in COIlllllon or only vertices. The empty spaces
form triangles, or lozenges composed of pairs of triangles
(Figures 87-88).
FIGURE 87. FIGURE 88.
FIGURE 89. FIGURE 90.
Nos. 13 and 15 yield great varieties of designs, some of
which are shown in Figures 89 and 90.
Figures 91, 92, and 93 give mosaics involving No. 11 in
combination with Nos. 15, 17, and 5, respectively.
No. 16 results in hexagons surrounded by triangles, as in
Figure 94.