directrix
kikino, As a line from which a curve can be made by taking all equidistant points of a conic section. Kaha kau.
kikino, As a line from which a curve can be made by taking all equidistant points of a conic section. Kaha kau.
kikino, As a line which divides a parabola into two equal areas, in math. Kaha anaalike.
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