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New posts in sangaku
Difficult Recurrence
geometry
recurrence-relations
sangaku
Sangaku - Find diameter of congruent circles in a $9$-$12$-$15$ right triangle
geometry
euclidean-geometry
triangles
circles
sangaku
Sangaku: Show line segment is perpendicular to diameter of container circle
geometry
euclidean-geometry
triangles
circles
sangaku
Sangaku. How to draw those three circles with only a ruler and a compass?
geometry
euclidean-geometry
geometric-construction
sangaku
sangaku - a geometrical puzzle
geometry
puzzle
sangaku
An ancient Japanese geometry problem: Three circles of equal radius inscribed in an isosceles triangle.
geometry
sangaku
Sangaku: to prove one of the intangents is parallel to $BC$
geometry
euclidean-geometry
circles
sangaku
Equilateral triangle and very peculiar inscribed tangent circles
geometry
euclidean-geometry
geometric-construction
homothety
sangaku
What is the size of each side of the square?
geometry
circles
recreational-mathematics
problem-solving
sangaku
Japanese Temple Problem From 1844
geometry
sangaku
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