弧こ

noun

arc

Refers to a curved line or shape, often used in geometry, astronomy, or describing curved paths.

• 虹にじは空そらに大おおきな弧こを描えがいた。

  The rainbow drew a large arc in the sky.

• この円えんの弧この長ながさを計けい算さんしてください。

  Please calculate the length of this arc of the circle.