Notes: Interactive, Videos & Exs Conic: Parabolas

• Click the link, Conic Sections 3-D Interactive, below to explore how conic sections are formed. Questions to think about:

1. A plane cutting through the cone perpendicular to the base of the cone creates...
2. A plane cutting through the cone parallel to the base of the cone creates...
3. A plane cutting through the cone at an angle parallel to the edge of the cone creates...
4. A plane cutting through the cone at an angle between the what angle measures creates an ellipse?

Link: Conic Sections 3-D Interactive

• Click the link to see an interactive graph definition of a parabola.

See that the definition below is true.

Parabola definition: the set of all points (x,y) that are equidistant to a fixed line called the directrix and a fixed point called the focus.

Link: Parabola Interactive Graphs

• Use the video example below and/or the written examples below to assist you with work on Parabolas.

• Click the link for a video example: Video of Equation of Parabola given vertex and directrix