Friday, February 17, 2012

Algebraic Identity - Square of Sum

This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com

4 comments:

  1. Sanjay,
    I think the usual way to show this geometrically is to draw it with the b x b square in the upper right hand corner. (In other words, remove points E and D and extend CB to meet QR at D). To me this is clearer. Is there some special reason you put the square in the lower right hand corner?

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    Replies
    1. There is no specific reason for putting b x b there. Point A is a variable point you can drag it with your mouse.

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  2. ....but ther is a very good reason to put it where Petersuggests - it makes it clear, obvious and easy, as opposed to arbitary and complicated.

    I like Sanjay's square of difference though.

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