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Binary Heptagonal Flexagon

**Figure 5:** The binary heptagonal flexagon has twelve vertices.
$\begin{figure} \centering \begin{picture} (320,300) \put(0,0){\epsfxsize=320pt \epsffile{binheptmap.eps}} \end{picture} \end{figure}$

**Figure 6:** Permutation of the heptagons along the strip for a binary heptagonal flexagon.
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**Figure 7:** Top side of a binary heptagonal flexagon. First of two sectors.
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**Figure 8:** Bottom side of a binary heptagonal flexagon. First of two sectors.
$\begin{figure} \centering \begin{picture} (400,480) \put(0,0){\epsfxsize=400pt \epsffile{binhepbot.eps}} \end{picture} \end{figure}$

**Figure 9:** Top side of a binary heptagonal flexagon. Second sector.
$\begin{figure} \centering \begin{picture} (400,480) \put(0,0){\epsfxsize=400pt \epsffile{binheptop.eps}} \end{picture} \end{figure}$

**Figure 10:** Bottom side of a binary heptagonal flexagon. Second sector.
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Microcomputadoras
2000-11-11