Assertion: curve's point | /r/HasProperty | pole
Facets:
Source sentences:
text: For a point (pole) on the parabola, the polar is the tangent at this point (see picture: P 1 , p 1 {\displaystyle P_{1},\ p_{1}}
text: This relation is called the pole–polar relation of the parabola, where the point is the pole, and the corresponding line its polar.