What A Bill Of Sale Looks Like

Geometry Conic Sections Generating function

http://mathdemos.gcsu.edu/mathdemos/family_of_functions/conic_gallery . html
http://caminos.udc.es/info/asignaturas/101/secciones.html
http://www.amordediospinilla.es/Conicas/index.htm
Dandelin View:

http://rowdy.mscd.edu/ talmanl ~ / HTML / QDEllipse.html
http://rowdy.mscd.edu/ talmanl ~ / HTML / QDParabola.html
http : / / rowdy.mscd.edu / ~ talmanl / HTML / QDHyperbolaDF.html
http://rowdy.mscd.edu/ talmanl ~ / HTML / QDEllipseDF.html
http://rowdy . mscd.edu / ~ talmanl / HTML / QDHyperbola.html

For if there is any doubt
http://www.eidansoft.com/public/personales/weblog/archivos/DibujoTecnicoPDF/TEMA11_Conicas.pdf
http://www.stefanelli.eng. br / webpage / es_parabola.html and final
:
http://images.google.es/imgres?imgurl=http://www.math.odu.edu/cbii/calcanim/consec.jpg & ; imgrefurl = http://www.math.odu.edu/cbii/calcanim/&usg=__mSNzg2yOXHvP4P6FlNB-3UMGAy0=&h=278&w=235&sz=74&hl=es&start=80&sig2 = 33BhwzCNlBs4nF2W_hezBw & ITBS = 1 & tbnid = oz5iU0v6z79EKM: & TBNH = 114 & tbnw = 96 & prev = / images% 3Fq% 2Bsections 3Dconic% 26start% 3D60% 26hl% 3des%% 26sa% 3DN% 26ndsp% 3D20% 26tbs% 3Disch: 1 & ei = mDyrS6yJEIqQjAeuyeizDw

spot tracing and tangent cone:

http://www.educacionplastica.net/conicas.htm

conclude with how to draw the cone on the board:

http: / / www.prepa1.uady.mx/pizarra/secciones_conicas.ppsx .

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