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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 Antiparallel (mathematics) ： ウィキペディア英語版 Antiparallel (mathematics) In geometry, anti-parallel lines can be defined with respect to either lines or angles. ==Definitions== Given two lines $m\_1\; \backslash ,$ and $m\_2\; \backslash ,$, lines $l\_1\; \backslash ,$ and $l\_2\; \backslash ,$ are anti-parallel with respect to $m\_1\; \backslash ,$ and $m\_2\; \backslash ,$ if $\backslash angle\; 1\; =\; \backslash angle\; 2\; \backslash ,$ in Fig.1. If $l\_1\; \backslash ,$ and $l\_2\; \backslash ,$ are anti-parallel with respect to $m\_1\; \backslash ,$ and $m\_2\; \backslash ,$, then $m\_1\; \backslash ,$ and $m\_2\; \backslash ,$ are also anti-parallel with respect to $l\_1\; \backslash ,$ and $l\_2\; \backslash ,$. In any quadrilateral inscribed in a circle, any two opposite sides are anti-parallel with respect to the other two sides (Fig.2). Two lines $l\_1$ and $l\_2$ are antiparallel with respect to the sides of an angle if and only if they make the same angle $\backslash angle\; APC$ in the opposite senses with the bisector of that angle (Fig.3). 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「Antiparallel (mathematics)」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.