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Old 01-06-2010, 08:53 AM
Barrykgerdes
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Barrykgerdes is offline
 
Join Date: Feb 2007
Location: Beaumont Hills NSW
Posts: 2,900
Quote:
Originally Posted by TrevorW View Post
Draw a base line to scale

use a protractor to mark your angles then draw lines till they intersect

then

measure with a ruler will give the length of each side

simple
That reminds me of our learning Pythagoras theorem:
We proved it in Mathmatics first
Then we proved it "practically" in science by constructing a rt angle triangle on graph paper and counting squares.

The only "calculators" we had in those days were the standard issued maths tables sine,cos,tan and log, fingers or a sliderule.

Barry

Last edited by Barrykgerdes; 01-06-2010 at 08:56 AM. Reason: the
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