Galois Theory
Circles are geometric figures defined as the set of all points in a plane that are equidistant from a fixed point called the center. This concept is crucial in understanding various geometric constructions, particularly when it comes to defining constructible numbers and methods of drawing shapes using basic tools like a compass and straightedge. Circles can also help illustrate relationships between different geometric figures, enabling a deeper understanding of angles, arcs, and chords.
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