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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Negative pedal curve ： ウィキペディア英語版 Negative pedal curve In geometry, a negative pedal curve is a plane curve that can be constructed from another plane curve ''C'' and a fixed point ''P'' on that curve. For each point ''X'' ≠ ''P'' on the curve ''C'', the negative pedal curve has a tangent that passes through ''X'' and is perpendicular to line ''XP''. Constructing the negative pedal curve is the inverse operation to constructing a pedal curve. ==Definition== In the plane, for every point ''X'' other than ''P'' there is a unique line through ''X'' perpendicular to ''XP''. For a given curve in the plane and a given fixed point ''P'', called the pedal point, the negative pedal curve is the envelope of the lines ''XP'' for which ''X'' lies on the given curve. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Negative pedal curve」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.