Exercise 8.5.1. Figure 8.5.3 shows two Möbius bands after identifying the a andb pairs. Explain that the further identification of the e and d pairs means gluing the two Möbius bands together along their boundary circles. Then explain that the result is the same as the Klein bottle as constructed in Figure 8.4.1. Figure 8.5.3. Glueing two Möbius bands together.

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