alleryWhich tool makes the neusis construction different from classical ones?
AA sliding marked ruler
BAn unmarked plain ruler
CA collapsing compass
DA pair of dividers
Answer & Solution
Correct answer: A. A sliding marked ruler
1. Neusis uses simultaneous sliding and rotation of a marked straightedge.
2. The classical tools cannot do this.
3. That is why it can trisect an angle without breaking the impossibility proof.
_Source: Wikipedia, Angle trisection, lead section_
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