Linked from

The 76 pages that link to Circle, each with the reason it gives.

• Conic sectionBroader topic: A plane perpendicular to the cone’s axis can cut a circular section.

• Analytic geometryBroader topic: The distance formula yields its standard coordinate equation.

• Synthetic geometryBroader topic: Synthetic arguments often exploit tangency, cyclicity, and equal angles in circle configurations.

• Isoperimetric inequalityBroader topic: It is the unique plane shape attaining equality for fixed perimeter.

• ManifoldBroader topic: The circle is the simplest compact one-dimensional manifold without boundary.

• Rotational symmetryBroader topic: Every rotation about its center preserves a circle.

• Euclidean planeBroader topic: Circles are the basic loci defined by Euclidean distance.

• Isoperimetric problemBroader topic: Among planar closed curves of fixed length, it encloses the greatest area.

• Implicit differentiationBroader topic: Its equation yields tangent slopes without solving separately for the upper and lower semicircles.

• Closed curveBroader topic: A circle is a particularly symmetric closed curve, not the general shape of a loop.

• Borsuk–Ulam theoremBroader topic: For a circle mapped continuously to the real line, some opposite pair has equal values.

• Jafar PanahiBroader topic: This film makes the constraints on women central through its linked, circular structure.

• Pizza theoremBroader topic: A disk has a circular boundary, but the area argument also extends beyond circles.

• Four-vertex theoremBroader topic: Every point has the same curvature, so every point is both a local maximum and minimum under non-strict conventions.