CONCEPTOS BASICOS

PUNTO RECTA Y ANGULOS

http://www.youtube.com/watch?v=5rXKbuwWh80&feature=related

http://www.youtube.com/watch?v=afHSSzR31h8&feature=related


CONSTRUCCION DE ANGULOS

http://www.youtube.com/watch?v=gGA71O89mHg&feature=related

http://www.youtube.com/watch?v=AovIzEPG_Y0&feature=related

http://www.youtube.com/watch?v=7KMWmXkExqU&feature=related

http://www.youtube.com/watch?v=tXejlp217mY&feature=related