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http://www.mathsnet.net/geometry/solid/guessview.html
http://www.mathsnet.net/geometry/solid/views1.html
http://www.mathsnet.net/geometry/solid/views2.html
http://www.mathsnet.net/geometry/solid/nets.html
http://www.mathsnet.net/geometry/solid/rotatinghouses.html
NEW
link to solving equations
powerpoint NEW
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