Sangaku
Sangaku
Wooden tablets inscribed with geometrical theorems in Edo Japan.
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First pulled by vasco, Nov 9, 2026
Not sold on the market yet.
Readers' pathsAug 2026 – Oct 2026
Readers go next to
Share of the 524 clicks on its links
Soddy's hexlet
Chain of 6 spheres tangent to 3 given spheres.
23%
Japanese theorem for cyclic polygons
Theorem in Euclidean geometry.
11%
Ford circle
Rational circle tangent to the real line.
9.4%
Recreational mathematics
Form of entertainment in mathematics.
7.3%
Equal incircles theorem
On rays from a point to a line, with equal inscribed circles between adjacent rays.
7.3%
Descartes's theorem
Equation for radii of tangent circles.
7.1%
Problem of Apollonius
Geometry problem about finding touching circles.
6.9%
Japanese theorem for cyclic quadrilaterals
Centers of the incircles of triangles inside a cyclic quadrilateral form a rectangle.
5.5%
Sarugaku
Traditional Japanese theatre.
4.6%
Seki Takakazu
Japanese mathematician (c. 1642–1708).
3.1%
Readers come from
Share of the 441 readers arriving from another article
Puzzle
Problem or enigma that tests a person's ingenuity.
20%
Ema (Shinto)
Wood plaque deposited in a Japanese temple to ask for a wish.
20%
Soddy's hexlet
Chain of 6 spheres tangent to 3 given spheres.
16%
Japanese theorem for cyclic polygons
Theorem in Euclidean geometry.
15%
Seki Takakazu
Japanese mathematician (c. 1642–1708).
4.5%
Ford circle
Rational circle tangent to the real line.
3.2%