Difficult:
This section follows very simply from section 7.1, but as I have yet to wrap my mind around that as a result of sleeping through Monday's class, my understanding of all of the impossibility proofs are castles without foundations, and cannot stand on their own.
Reflective:
All of the impossibility proofs rest on the idea that minimal polynomials of the constructions have to have a degree that is a power of 2 to be possible. This is a powerful idea, as exemplified by the relative brevity of all the proofs in section 7.2. It is neat that such an odd idea as using algebra to represent geometric constructions lends itself to such brief proofs.
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