香港寵物小精靈村落 論壇

標題: A.maths. Problem [打印本頁]

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作者: JOHNLAM17    時間: 6/8/2006 02:43 PM
標題: A.maths. Problem
A problem about Vector. Please Help me.



ABCD is a parallelogram. Prove that the diagonals AC and BD bisect each other. (Please use vector method)

Thank you for helping.  :)

[ 本帖最後由 JOHNLAM17 於 6/8/2006 14:45 編輯 ]

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