en.wikipedia.org/wiki/Parabola

A parabola is a two-dimensional, mirror-symmetrical curve, which is
approximately U-shaped when oriented as shown in the diagram ...

www-history.mcs.st-and.ac.uk/Curves/Parabola.html

Parabola. Cartesian equation: y = ax<sup>2</sup> + bx + c. Click below to see one of the
Associated ... Negative pedal curve wrt origin, Negative pedal wrt another point.

www.cut-the-knot.org/ctk/Parabola.shtml

(Note that the word parameter has the same Greek origin as parabola and
signifies an attribute of a mathematical object given either alongside other
attributes ...

www.carondelet.pvt.k12.ca.us/Family/Math/03210/page2.htm

The History | Definition | Breakdown of the Equation. The History ... Pappus (290
to 350) considered the focus and directrix of the parabola. Pascal (1623 to ...

www.parabola.unsw.edu.au/content/history

Dec 15, 2015 ... History. 50 years of Parabola The first issue of Parabola appeared in July 1964.
This magazine was published by UNSW under the editorial ...

mysite.du.edu/~jcalvert/math/parabola.htm

May 3, 2002 ... Thus, for a parabola, y<sup>2</sup> = 2px, which is the equation of the curve. For details, see
Sir Thomas Heath, A History of Greek Mathematics (New ...

mathworld.wolfram.com/Parabola.html

For a parabola opening to the right with vertex at (0, 0), the equation in Cartesian
.... http://www-groups.dcs.st-and.ac.uk/~history/Curves/Parabola.html. Pappas ...

emat6000conics.weebly.com/history.html

Around 360-350 B.C., Menaechmus discovered the curves parabola, hyperbola,
and ellipse; however, he did not use these terms. Instead of those terms, ...

www.intmath.com/plane-analytic-geometry/4-parabola.php

Feb 24, 2016 ... This section contains the definition of a parabola, equation of a parabola, some ...
from the origin to the focus, and from the origin to the directrix.

www.ck12.org/book/CK-12-Algebra-II-with-Trigonometry-Concepts/section/10.1/

Apr 25, 2013 ... This lesson covers graphing and writing the equation of a parabola when the
vertex is on the origin.