director circle's Usage Examples:

(proof: see below), The orthoptic of an ellipse x2/a2 + y2/b2 1 is the director circle x2 + y2 a2 + b2 (see below), The orthoptic of a hyperbola x2/a2 −.

director The director circle of a conic is the locus of points where two orthogonal tangent lines.

In geometry, the director circle of an ellipse or hyperbola (also called the orthoptic circle or Fermat–Apollonius circle) is a circle consisting of all.

geometry, the director circle of an ellipse or hyperbola (also called the orthoptic circle or Fermat–Apollonius circle) is a circle consisting of all points.

Synonyms:

managing director, manageress, bank manager, administrator, decision maker, manager, district manager,

Antonyms:

starve, live out, abstain, nonmember,