六角(ろっかく)

ろっかく
noun
hexagon; hexagonal
descriptivenumber
1. hexagon; hexagonal shape
A six-sided polygon or anything having six corners or angles. Used in geometry, design, and to describe physical shapes.
蜂(はち)の巣(す)は六角(ろっかく)の形(かたち)をしている。
Honeycomb has a hexagonal shape.
六角(ろっかく)レンチでネジを締(し)めてください。
Please tighten the screw with a hex wrench.
この建物(たてもの)の断面(だんめん)は六角(ろっかく)になっていて、とても珍(めずら)しいデザインだ。
The cross-section of this building is hexagonal — a very unusual design.

Composed of 六(ろく) (six) and 角(かく) (angle/corner). Refers to both the geometric shape (hexagon) and the property of being six-sided (hexagonal).

Common collocations

  • 六角(ろっかく)レンチ: hex wrench / Allen key
  • 六角(ろっかく)形(けい): hexagonal shape
  • 六角(ろっかく)ボルト: hex bolt
  • 六角(ろっかく)柱(ちゅう): hexagonal prism
  • 正(せい)六角(ろっかく)形(けい): regular hexagon

Related words

  • 三角(さんかく): triangle — three angles
  • 四角(しかく): square/rectangle — four angles
  • 五角(ごかく): pentagon — five angles
  • 八角(はっかく): octagon — eight angles

Related Words

Related: 三角(さんかく) (triangle)
Related: 四角(しかく) (square/rectangle)
general
Added 2026.5.4 23:10 · Revised 2026.9.4 21:29
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