n Learning and Teaching Mathematics - A correct visual proof of area of trapezium

Volume 2011, Issue 10
  • ISSN : 1990-6811


The July 2009 issue of (no. 7, p. 28) contains the following "proof without words" for the area of a trapezium as submitted by Yiu-Kwong Man... Unfortunately the proof is only valid for an isosceles trapezium, and not for a general trapezium.

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