今天是:2025年7月13日 星期日
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题目

What are the characteristics of the coordinates of points on the coordinate plane and the coordinate axis? And indicate the location of the following points:

A.,B.,C.,D..

解析

Solution: According to the definition of the space rectangular coordinate system , one of the coordinates of the points on the coordinate planes , , is zero, followed by , and ; on , , axes Two of the coordinates of the points are zero, namely 

, , ; 

  The four points given in this question:

  Point is on surface ;

  Point on the plane ( B );

  Point axis ( C );

  Point axis ( D ) .

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