Elipse

https://www.youtube.com/watch?v=7GF7n8xIvzQ&index=1&list=PLY7WofWSXw4A7YlQ5n5o53u_n_oAaPIzg

Rectas

https://www.youtube.com/watch?v=jrYeffB-R3k&list=PLY7WofWSXw4A7YlQ5n5o53u_n_oAaPIzg&index=5

Circunferencia

https://www.youtube.com/watch?v=qwikfl9dQeg&list=PLY7WofWSXw4A7YlQ5n5o53u_n_oAaPIzg&index=4

 

Lugar geométrico

https://www.youtube.com/watch?v=iFYbQ2I5MGo&index=8&list=PLY7WofWSXw4A7YlQ5n5o53u_n_oAaPIzg