alleryWantzel proved Gauss's condition is necessary for what?
AConstructible polygons
BPi being transcendental
CDoubling a cube by hand
DLines being parallel
Answer & Solution
Correct answer: A. Constructible polygons
1. Gauss gave a sufficient condition for a regular n-gon to be constructible.
2. Wantzel proved in 1837 that it is also necessary.
3. Lindemann, not Wantzel, handled pi.
_Source: Wikipedia, Straightedge and compass construction, section History_
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