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Geometrically, the nth roots of unity lie at the vertices of
AA regular n-gon in the unit circle
BA square whose sides all have length n
CAn ellipse with semi-axes 1 and n
DA straight line joining 1 and n
Answer & Solution
Correct answer: A. A regular n-gon in the unit circle
All roots have modulus 1 and are equally spaced by 2 pi / n, forming a regular n-gon on the unit circle.
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