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Forum URL:	http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name:	High school
Topic ID:	159
Message ID:	0
#0, A geometry problem Posted by Sprites on Apr-29-02 at 02:43 PM I am having trouble figuring out how to disprove that the following matrix has a euclidian representation. \|x\| \|x\| \| \|x\| \| \|x\| \| \| \|x\| \| \|x\| \| \|x\| \| \|x\| \| \|x\| \| \| \|x\| \| \|x\| \| \|x\| \| \|x\|x\| \| \| \| \|x\|x\| \| \| \| \|x\| \|x\| \|x\| \| \| \| \|x\| \| \|x\| \| \|x\| \|x\| \| \|x\| \| \| \| \|x\|x\|x\| \| \| \| \| \| \| \| \| \| \| \| \|x\|x\|x\| \| \| \| \| \| \| \| \| \| \| \| \|x\|x\|x\| The rule is as following: The matrix rows represent points, the matrix columns represent lines, the x'es show where a point lies on a line. No four points are collinear. I hope this problem finds you entertained. Thank you for your time.