Linked from

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

• SphereNarrower topic: A circle is the two-dimensional counterpart of a sphere.

• Unit circleNarrower topic: A unit circle is the special case whose fixed distance is one.

• Cyclic quadrilateralNarrower topic: All four vertices must lie on this geometric locus.

• PiNarrower topic: Pi is defined by comparing a circle’s circumference with its diameter.

• Inscribed angle theoremNarrower topic: The theorem is a basic tool for solving problems about angles on circles.

• Power of a pointNarrower topic: Power is defined relative to a circle and depends on its center and radius.

• RadiusNarrower topic: A radius is defined by its endpoints on this curve and at its center.

• DiameterNarrower topic: A circle’s center and circumference determine which chords qualify as diameters.

• IncircleNarrower topic: The incircle is a circle whose fixed radius reaches all three triangle sides.

• Central angleNarrower topic: A central angle is defined by its position within this geometric figure.

• Uniform circular motionNarrower topic: It defines the path whose radius remains fixed throughout the motion.

• ChordNarrower topic: A chord is defined by endpoints on this curve.

• Radical axisNarrower topic: The centers and radii of the two circles determine their power functions.

• Tangent–secant theoremNarrower topic: The theorem applies to a tangent and secant drawn to this curve.

• Descartes' theoremNarrower topic: Each object in the theorem is a circle described by its radius and curvature.

• Intersecting secants theoremNarrower topic: The theorem’s equal-product relation depends on intersections with this curve.

• Pie chartNarrower topic: The whole dataset is represented by one complete circle.

• MilliradianNarrower topic: Radians are defined through arc length and radius on a circle.

• Monge's theoremNarrower topic: The planar objects whose pairwise similitude centers the theorem aligns.

• Six circles theoremNarrower topic: Every object in the theorem is a circle in the Euclidean plane.

• Tusi coupleNarrower topic: The mechanism's result depends on coordinating two circles with a particular size ratio.

• Constant chord theoremNarrower topic: The theorem concerns chords within one circle, where a common radius makes arc and chord comparisons possible.

• Five circles theoremNarrower topic: The five objects in the configuration are circles.

• Japanese theoremNarrower topic: The quadrilateral’s vertices lie on a circle, which imposes its angle constraints.

• Seven circles theoremNarrower topic: The theorem specializes a broader geometry of circle incidence and intersection.