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十角形 (じっかくけい) Japanese meaning | Kotomora

十じっ角かく形けい

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Meanings

1

noun

decagon

geometry

A polygon with ten sides and ten angles. Used in geometry contexts.

十じっ角かく形けいの内ない角かくの和わは1440度どです。
The sum of the interior angles of a decagon is 1440 degrees.

Written forms

十角形
- じっかくけい
  Standard kanji spelling for decagon.
- じっかっけい
じっかっけい

Kanji

十ten
角angle, corner, square
形

shape, form, style

Similar words

五ご角かく形けい
Pentagon (5 sides), while 十角形 is a decagon (10 sides).
多た角かく形けい
General term for polygon; 十角形 is a specific type of polygon.

Etymology

Compound of 十 (ten), 角 (angle), and 形 (shape).