Dynamic Geometry 1480: Japanese Theorem for Cyclic Polygon, Triangulation, Non-intersecting Diagonals, Sum of Inradii, Invariant, Step-by-step Illustration

Interactive step-by-step animation using GeoGebra. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Dynamic Geometry 1452: Japanese Theorem, Sangaku

Interactive step-by-step animation using GeoGebra. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1081: Equilateral Triangle, Inscribed Circle, Inradius, Tangent Circles, Radius, Tangent Line, Sangaku Japanese Problem

Geometric Art: Typography, iPad

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Geometry Problem 1099: Four Circles, Common External Tangent, Common Internal Tangent, Radius, Measurement, Sangaku, Typography, iPad Apps

Geometric Art: Typography, iPad

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Typography of Geometry Problem 336. Two equal circles, a Common Tangent and a Square. iPad

Geometric Art

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Geometry Problem 1154 Sangaku Problem: Three circles and a tangent line

Geometry Problem. Post your solution in the comments box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Problem 1103: Right Triangle, Incircle, Inscribed Circle, Radius, Geometric Mean, Sangaku, Japanese, Metric Relations

Geometry Problem. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Problem 1099 Four Circles, Common External Tangent, Common Internal Tangent, Radius, Metric Relations, Sangaku

Geometry Problem. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometric Art: Sangaku Problem: Three circles and a tangent line

Geometric Art

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Geometry Problem 1093. Square, Circle, Tangent, Radius, Side, Sangaku, Japanese

Geometry Problem. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1092. Equilateral Triangle, Square, Circle, Tangent, 90 Degree, Sangaku

Geometry Problem. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1077: Chain of Equal Tangent Circles, Circular Sector, Area, Sangaku, Sacred Geometry

Geometry Problem. Post your solution in the comments box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Sangaku Japanese Geometry Problems

Click the figure below to see the visual index of Sangaku problems.

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Level: High School, SAT Prep, College geometry

Geometry Problems 41-50: Triangle, Sangaku, Quadrilateral, Circle, 30-60 Degrees

Geometry Problem
Click the figure below to see problems 41-50 about Triangle, Sangaku, Quadrilateral, Circle, 30-60 Degrees.


See also:
Problems 41-50

Level: High School, SAT Prep, College geometry

Sangaku, Japanese, Problem

The incenters of four triangles in a cyclic quadrilateral form a rectangle.
Sangaku or San Gaku are Japanese geometrical problems in Euclidean geometry on wooden tablets created during the Edo period (1603-1867) by members of all social classes.


Continue reading at:
gogeometry.com/sangaku2.html

Elearn Geometry Problem 41

See complete Problem 41
Sangaku, Mickey Mouse, Circles, Tangent. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.