Linked from

The 22 pages that link to Chord, each with the reason it gives.

• CircleBroader topic: The diameter is the special chord that passes through the center.

• AlmagestRelated: Ptolemy’s chord table supplied the geometric calculations behind astronomical predictions.

• Inscribed angle theoremBroader topic: The theorem’s inscribed angle is formed by two chords.

• RadiusNarrower topic: A radius is a special center-to-boundary segment, unlike a general chord.

• DiameterNarrower topic: A diameter is the special chord that passes through the circle’s center.

• Ancient Greek astronomyRelated: Chord tables gave astronomers a computational tool for translating angles into geometric lengths.

• Ptolemy's theoremBroader topic: Every side and diagonal of the quadrilateral is a chord of its circumcircle.

• Secant lineRelated: A circle’s secant intersects at two points, and the portion between them is a chord.

• Central angleRelated: The radii forming the angle meet the endpoints of a chord across the intercepted arc.

• Thales' theoremRelated: The two sides meeting at the semicircle's point are chords.

• Radical axisRelated: When two circles intersect, their common chord lies on their radical axis.

• Law of sinesRelated: Every triangle side is a chord of its circumcircle.

• DiagonalCompared with: A chord need not connect vertices of a polygon, though polygon diagonals can be chords of a circumcircle.

• Intersecting chords theoremBroader topic: The theorem compares the two parts of each of its intersecting chords.

• History of trigonometryBroader topic: Ancient Greek astronomers measured angles indirectly through the lengths of circle chords.

• Tangent–secant theoremRelated: The secant’s portion inside the circle is a chord.

• Intersecting secants theoremRelated: The portions between each secant’s circle intersections are chords.

• Butterfly theoremNarrower topic: The theorem is built from three chords arranged through one interior point.

• Constant chord theoremNarrower topic: A chord is the geometric object whose length the theorem equates.

• Haruki's theoremRelated: Chords provide the circle segments whose lengths enter the theorem's configurations.

• Holditch's theoremNarrower topic: The theorem begins with a chord whose length stays fixed as its endpoints move.

• Van Schooten's theoremRelated: PA, PB, and PC are chords, so their lengths encode the arcs between their endpoints.