極きょく線せん

noun, noun which may take the genitive case particle 'no'

polar line; polar

Technical term in geometry, referring to the polar line of a point with respect to a conic section. Used as a noun or with の to modify another noun.

• 二に次じ曲きょく線せんに対たいする点てんの極きょく線せんを求もとめよ。

  Find the polar line of the point with respect to the quadratic curve.

• 極きょく線せんの方ほう程てい式しきを導どう出しゅつする。

  Derive the equation of the polar line.