sangaku

== English == === Etymology 1 === From Japanese 算額 (sangaku, literally “calculation tablet”). ==== Noun ==== sangaku (plural sangaku) A geometrical problem or theorem on a wooden tablet, placed as an offering at a Japanese shrine. === Etymology 2 === From Japanese 散楽 (sangaku). ==== Noun ==== sangaku (uncountable) (historical) An old circus-like form of entertainment in Japan, a predecessor of sarugaku. == Japanese == === Romanization === sangaku Rōmaji transcription of さんがく