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	Pierre Varignon - Wikipedia, the free encyclopedia
		Pierre Varignon (born in 1654 in Caen - died on December 23, 1722 in Paris) was a French mathematician.
		Varignon became professor of mathematics at the Collège Mazarin in Paris in 1688 and was elected to the Académie Royale des Sciences in the same year.
		Except for l'Hospital, Varignon was the earliest and strongest French advocate of differential calculus.
	en.wikipedia.org /wiki/Pierre_Varignon (313 words)

	The Galileo Project
		Varignon was the son and brother of contracting masons.
		Varignon's primary contribution to the progress of science was his pedagogical activity in general statics.
		Varignon was nominated as geometer in the Académie in 1688.
	galileo.rice.edu /Catalog/NewFiles/varignon.html (835 words)

	Pierre Varignon Biography / Biography of Pierre Varignon World of Mathematics Biography
		Although Pierre Varignon is principally remembered for his contributions to the area of statics, a branch of mechanics that concerns resting objects or forces in equilibrium, he also made advances in calculus.
		The son of a poor mason, Varignon was born in Caen, France on an unknown date in 1654.
		Varignon was one of the first French scholars to realize the value of calculus and, by adapting Leibniz's calculus to the inertial mechanics in Isaac Newton's Principia, helped to develop analytic dynamics.
	www.bookrags.com /biography-pierre-varignon-wom (462 words)

	Varignon biography
		Pierre Varignon was educated at the Jesuit College in Caen.
		Varignon became professor of mathematics at the Collège Mazarin, Paris in 1688, then in 1704 in addition to the chair at Collège Mazarin, he became professor of mathematics at the Collège Royal.
		Varignon's chief contributions were to graphical statics and mechanics.
	www-groups.dcs.st-and.ac.uk /~history/Biographies/Varignon.html (185 words)

	WhoWasThere reply
		Pierre Varignon was 66 this year and would die in a further 2 years.
		Pierre Bouguer was 22 this year and would die in a further 38 years.
		Pierre de Maupertuis was 22 this year and would die in a further 39 years.
	www-history.mcs.st-and.ac.uk /history/cgi-bin/mathyear.cgi?YEAR=1720 (1052 words)

	[No title]
		He visited Paris from time to time and established intimate relations with the abbe de Saint Pierre, the abbe Vertot and the mathematician Pierre Varignon.
		This office he actually held for the long period of forty-two years; and it was in this official capacity that he wrote the Histoire du renouvellement del' Academie des Sciences (Paris, 3 vols., 1708, 1717, 1722) containing extracts and analyses of the proceedings, and also the doges of themembers, written with great simplicity and delicacy.
		Perhaps the best known of his eloges, of which there are sixty-nine in all, is that of his uncle Pierre Corneille.
	encyclopedia.jrank.org /correction/edit?locale=en&content_id=25777 (997 words)

	Varignon Parallelogram
		Coxeter and Greitzer attribute the theorem to Pierre Varignon (1654-1722).
		The area of Varignon's parallelogram is half that of the quadrilateral.
		Its perimeter is equal to the sum of the diagonals of the quadrilateral.
	www.cut-the-knot.org /Curriculum/Geometry/Varignon.shtml (231 words)

	BERNARD LE BOVIER DE FONTENELLE - LoveToKnow Article on BERNARD LE BOVIER DE FONTENELLE (Site not responding. Last check: 2007-10-08)
		He consequently was admitted a member both of the Academy of Inscriptions and of the Academy of Sciences; and in 1697 he became perpetual secretary to the latter body.
		Perhaps the best known of his loges, of which there are sixty-nine in all, is that of his uncle Pierre Corneille.
		This was first printed in the Nouvelles de la republique des leltres (January 1685) and, as Vie de Corneille, was included in all the editions of Fontenelles fEuvres.
	54.1911encyclopedia.org /F/FO/FONTENELLE_BERNARD_LE_BOVIER_DE.htm (1010 words)

	Hyperbolic
		The hyperbolic spiral originated with Pierre Varignon in 1704.
		The roulette of the pole of a hyperbolic spiral rolling on a straight line is a tractrix.
		Pierre Varignon (1654-1722) was professor of mathematics at Collège Mazarin and later at Collège Royal.
	www-history.mcs.st-and.ac.uk /history/Curves/Hyperbolic.html (144 words)

	DELTA - popularnonaukowy miesięcznik - wybór artykułów (Site not responding. Last check: 2007-10-08)
		This was proved by Pierre Varignon in the 17th century and there is a good chance that most of our readers would be able to repeat the proof.
		In tribute to the original author of the proof the inner parallelogram used to be called Varignon's quadrilateral.
		He observed that if the sides of a quadrilateral are divided in three equal parts each and straight lines are drawn through partition points adjacent to one and the same vertex, then the straight lines will meet in the vertices of a parallelogram.
	www.mimuw.edu.pl /delta/articles/delta3/pointslats.html (407 words)

	BERNOULLI - LoveToKnow Article on BERNOULLI (Site not responding. Last check: 2007-10-08)
		Chemistry, as well as mathematics, seems to have been the object of his early attention; and in the year 2690 he published a dissertation on effervescence and fermentation.
		The same year he went to Geneva, where he gave instruction in the differential calculus to Nicolas Fatio de Duillier, and afterwards proceeded to Paris, where he enjoyed the society of N. Malebranche, J. Cassini, Philip de Lahire and Pierre Varignon.
		The invitation of a Venetian nobleman induced him again to visit Italy, where he resided two years, till his return to be a candidate for the chair of jurisprudence at Basel.
	www.12.1911encyclopedia.org /B/BE/BERNOULLI.htm (2286 words)

	varigon (Site not responding. Last check: 2007-10-08)
		When the midpoints of any quadrilateral are joined in order, they form a parallelogram. This theorem is due to a French mathematician named Pierre Varignon (1654-1722). The resulting parallelogram is named in his honor.
		The diagonals of the Varignon parallelogram are the bimedians of the
		Additional information about the centroid of the general quadrilateral is found at the link to centroid.
	www.pballew.net /varignon.html (74 words)

	Pierre Varignon - Consolidate Loan (Site not responding. Last check: 2007-10-08)
		Our Pierre Varignon counsel website is advanced so we have not much managed to add yet support, however what we have done so far is researched the too best Pierre Varignon sites on the net.
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	consolidate-loan.best-resource-links-5.info /1722/Pierre_Varignon (633 words)

	Middle East Open Encyclopedia: Pierre Varignon (Site not responding. Last check: 2007-10-08)
		This is an extract from The Middle East Open Encyclopedia, made possible through the Wikimedia Foundation.
		Iraq Museum International always displays the most recent published revision of the source article, Pierre Varignon; all previous versions may be viewed here.
		They link directly to authoring tools for you to start writing a particular article.
	www.baghdadmuseum.org /ref?title=Pierre_Varignon (435 words)

	Scientific Revolution - Westfall Catalogue - SAM-V-Z - Dr Robert A. Hatch
		Father: Artisan; Varignon was the son and brother of contracting masons.
		Technological Connections: Instruments; In 1699 Varignon published a mémoire on water clocks which applied the differential calculus to the flow of a fluid through an orifice.
		De Castries brother-in-law, Pierre de Bonsi, Archbishop of Toulouse and later Cardinal, became Vieussens patron.
	www.clas.ufl.edu /users/rhatch/pages/03-Sci-Rev/SCI-REV-Home/resource-ref-read/major-minor-ind/westfall-dsb/SAM-V-Z.htm (18040 words)

	College Mathematics Journal, The: Area relations on the skewed chessboard (Site not responding. Last check: 2007-10-08)
		Since the sides of quadrilateral A^sub 00^A^sub 08^A^sub 88^A^sub 80^ are divided into eight congruent parts, it is natural to wonder whether the cross-segments, such as A^sub 40^A^sub 48^, are also divided into eight congruent parts.
		To prove that this is the case, we make repeated use of a result attributed to Pierre Varignon (1654-1722).
		As a corollary of Varignon's Theorem, we note that HD and BF bisect each other.
	www.findarticles.com /p/articles/mi_qa3773/is_200305/ai_n9228899 (307 words)

	AIM25: University College London: De Varignon's Treatise on Gnomonics (Site not responding. Last check: 2007-10-08)
		Administrative/Biographical history: The author of the original text was presumably Pierre Varignon (1654-1722), the French mathematician, who was educated in Caen, became a priest, and devoted himself to mathematical science, becoming professor of mathematics at the Collège Mazarin, Paris, in 1688, and in 1704, in addition, professor at the Collège Royal.
		Scope and content/abstract: Manuscript volume, 18th century, containing De Varignon's 'Traité de Gnomonique', a treatise on gnomonics (the art of making sundials), including 35 leaves of diagrams.
		Archivist's note: Source: article on Varignon by J J O'Connor and E F Robertson at http://www-groups.dcs.st-andrews.ac.uk/~history/Mathematicians.
	www.aim25.ac.uk /cgi-bin/search2?coll_id=3457&inst_id=13 (309 words)

	Bernard Le Bovier De Fontenelle (bernard le bovier de fontenelle info) (Site not responding. Last check: 2007-10-08)
		But of Laodice, Camma, Stilico and some other pieces, Pierre Corneille himself said that "he wished he had written them," and he was not wont to speak lightly.
		Cardinal Richelieu originally fulfilled this role; upon his death in 1642, Pierre Séguier, the Chancellor of France, succeeded him.
		King Louis XIV took over the function when Séguier died in 1672; since then, the French head of state has always served as the Académie's protector.
	bordj.bou.arreridj.nl.wikimiki.info /en/Bernard+le+Bovier+de+Fontenelle (7511 words)

	hyperbolic spiral (Site not responding. Last check: 2007-10-08)
		When a hyperbolic spiral is rolling over a line, then the path of the pole forms a tractrix, being a roulette of the spiral.
		It was Pierre Varignon who studied the curve as first, in 1704.
		Later Johann Bernoulli (1710 - 1713) and Cotes (1722) worked on the curve.
	www.2dcurves.com /spiral/spiralh.html (87 words)

	René Antoine Ferchault De Réaumur History Summary (Site not responding. Last check: 2007-10-08)
		natural · eighteenth century · natural history · french scientist · geometers · french academy · thermometers · jesuit priest · forge · rochelle · la rochelle · daniel fahrenheit · pierre varignon
		He early demonstrated an unusual aptitude for mathematics.
		In 1708, through the good offices of the mathematician Pierre Varignon, Réaumur was elected a "student geometer" to the French Academy of Sciences at the unusually early age of 25.
	www.bookrags.com /history/sciencehistory/ren-antoine-ferchault-de-raumur-scit-0412 (651 words)

	Area of Triangles and Polygons (2D & 3D)
		Next, for an arbitrary quadrilateral, one can compute its area using a parallelogram discovered by Pierre Varignon (first published in 1731).
		It is amazing that the Greeks missed Varignon's simple result which was discovered 2000 years after Euclid!
		It is then easy to show that this midpoint quadrilateral is always a parallelogram, called the "Varignon parallelogram", and that its area is exactly one-half the area of the original quadrilateral [Coxeter,1967, Section 3.1].
	www.geometryalgorithms.com /Archive/algorithm_0101/algorithm_0101.htm (2621 words)

	Books by Pierre Costabel, compare prices
		You may browse this category by title or by publication date.
		by Jean Bernoulli, Pierre Costabel, Jeanne Peiffer, Pierre Varignon
		by Jean Baptiste Joseph Fourier, Pierre Costabel, John Herivel
	www.allbookstores.com /author/Pierre_Costabel.html (136 words)

	Morse H.S. - Magnet/Mathematics Connections
		Extend the idea presented in Only if Nice Weather Could Last Year Round to the world.
		Write a lesson on the mathematics of Pierre Bouguer and/or Pierre Varignon.
		Write a high school level magic squares activity.
	mathforum.org /alejandre/morse/math.languages2.html (211 words)

	Essay2
		The Hyperbolic Spiral is the inverse of the Spiral of Archimedes.
		It was studied by Pierre Varignon in 1704.
		These spirals can be graphed using polar equations of the form r = a/
	jwilson.coe.uga.edu /EMT668/EMAT6680.2000/Umberger/EMAT6690smu/Essay2smu/Essay2smu.html (536 words)

	PSIgate - Physical Sciences Information Gateway: Search/Browse Results (Site not responding. Last check: 2007-10-08)
		Enrico D'Ovidio Born: 11 Aug 1842 in Campobasso, Italy Died: 21 March 1933 in Turin, Italy Click the picture above to see a larger version Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically)...
		Pierre Varignon Born: 1654 in Caen, France Died: 23 Dec 1722 in Paris, France Click the picture above to see a larger version Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main in...
		Pierre Louis Moreau de Maupertuis Born: 28 Sept 1698 in Saint Malo, France Died: 27 July 1759 in Basel, Switzerland Click the picture above to see four larger pictures Show birthplace location Previous (Chronologically) Next Biographies Index...
	www.psigate.ac.uk /roads/cgi-bin/search_webcatalogue2.pl?limit=925&term1=biographies (930 words)

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