Constructing an Angle of 90 degrees

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=2jEfhX6icow

How to construct an angle of 90° (using just a straightedge and compass, without a protractor)? • Find the answer in this video. • Construction on paper. • Video without words. • My math materials in English: http://www.antonija-horvatek.from.hr/... . • My (whole) website: http://www.antonija-horvatek.from.hr/ . • Thanks to Rex Boggs, Rockhampton Grammar School, Australia (http://bit.ly/rexboggs ) for help with the English translation. • Music by longzijun, http://longzijun.wordpress.com/ . • Terms of use allow for free use in monetized YouTube videos: https://longzijun.wordpress.com/music... .

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