Mathematics for Computer Science
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“mcs” — 2017/3/3 — 11:21 — page 522 — #530<br />
522<br />
Chapter 13<br />
Planar Graphs<br />
III<br />
II<br />
I<br />
IV<br />
Figure 13.5<br />
A planar drawing with four continuous faces.<br />
b<br />
III<br />
a II I<br />
c<br />
IV<br />
Figure 13.6<br />
d<br />
The drawing with labeled vertices.
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