...When there is a line segment AB, if you take a point C on the line on which this line segment AB lies, you can create two line segments AC and CB. If C is on the line segment AB, you can internally divide the line segment AB at C (Figure 1). If C is on the extension of the line segment AB, you can externally divide the line segment AB at C (Figure 2). In this case, if AC:CB = m : n , then C is called the point that internally or externally divides the line segment AB into m : n . ... *Some of the terminology that refers to "external division" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…線分ABがあるとき,この線分ののっている直線上に点Cをとって二つの線分AC,CBを作ることを,Cが線分AB上にあれば線分ABをCで内分するといい(図1),Cが線分ABの延長上にあれば線分ABをCで外分external divisionするという(図2)。このときAC:CB=m:nならば,Cは線分ABをm:nに内分,または外分する点と呼ばれる。… ※「external division」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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