The Japanese theorem for cyclic polygons cardJapanese theorem for cyclic polygons

Japanese theorem for cyclic polygons

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Rarity: Common

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Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

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Class
Notion
Domain
Science and technology
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What Wikipedia says

In geometry, the Japanese theorem states that no matter how one triangulates a cyclic polygon, the sum of inradii of triangles is constant.

Excerpt from the Wikipedia article “Japanese theorem for cyclic polygons”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Kmhkmh, CC BY 3.0, via Wikimedia Commons.

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