10. http://www.um.es/docencia/pherrero/mathis/pitagoras/pitagor.htm
http://www.slideshare.net/oderflaoguh/teorema-de-pitagoras-ejemplos
http://es.wikipedia.org/wiki/Teorema_de_Pit%E0%A6%AFras
http://roble.pntic.mec.es/jarran2/cabriweb/1triangulos/teoremapitagoras.htm
https://www.youtube.com/watch?v=4NZFKE5-OD8
https://www.youtube.com/watch?v=hbhh-9edn3c&NR=1
https://www.youtube.com/watch?v=YoVo-iH130Y&NR=1
https://www.youtube.com/watch?v=Rejvxuz4ayE&feature=related
https://www.youtube.com/watch?v=mf-0PxEDx-M&feature=fvst
https://www.youtube.com/watch?v=ZvAJtQ-G7nI
https://www.youtube.com/watch?v=Szy0MFjo3sc&NR=1
https://www.youtube.com/watch?v=qjvy2jcbv8w&NR=1

11. http://www.aulaclic.es/openoffice/
https://www.youtube.com/user/TercerMilenioTV#p/a/u/1/K7G5_xlp1xQ
http://iesmseza.educa.aragon.es/webcortos/guiones/orientaciones.htm
http://www.aldearpg.net/Foros/showthread.php?tid=238
https://www.youtube.com/watch?v=g_Y0b7eqT0w
https://www.youtube.com/watch?v=X-rB7p96J6U&feature=related

12. https://www.youtube.com/watch?v=wvKhiS4oUwA
https://www.youtube.com/watch?v=bLKwxpqm8FU&feature=related
http://format-factory.softonic.com/
https://www.youtube.com/watch?v=rCzfJK-3peY&feature=related
https://www.youtube.com/watch?v=2dyBzepkUIY
http://www.rae.es/rae.html