Reference numberAP/20/13/1
TitleUnpublished manuscript, 'Démonstration de l'égalité à deux droits de la somme des angles d'un triangle quelconque, indépendamment de la théorie des paralléles et de la considération de l'infini' [Paper on the equality of angles of a triangle] by F [François] Paulet
Date24 May 1836
DescriptionPaulet explains that a straight line forming an acute angle with another straight line, will, when sufficiently produced, meet any line perpendicular to the latter, on the side of the acute angle. He uses this to demonstrate the equality of the sum of the angles of a triangle to two right angles. Includes one page of figures.

Subject: Mathematics / Trigonometry

Received 2 June 1836. Communicated by P M [Peter Mark] Roget.

Written by Paulet in Geneva.

Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 3 of Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society] as 'Démonstration de l’égalité à deux droits de la somme des angles d’un triangle quelconque, indépendamment de la théorie des parallèles, et de la considération de l’infini'.
Physical descriptionInk on paper
Access statusClosed
Access conditionsNot available to view, off site for conservation. Please refer to digital surrogate on Science in the Making.
Related materialDOI: 10.1098/rspl.1830.0254
Fellows associated with this archive
NA6616Roget; Peter Mark (1779 - 1869); physician and philologist1779 - 1869
Add to My Items

    Collection highlights

    Browse the records of some of our collections, which cover all branches of science and date from the 12th century onwards. These include the published works of Fellows of the Royal Society, personal papers of eminent scientists, letters and manuscripts sent to the Society or presented at meetings, and administrative records documenting the Society's activities since our foundation in 1660.

    The Royal Society

    The Royal Society is a Fellowship of many of
    the world's most eminent scientists and is the
    oldest scientific academy in continuous existence.
    Registered charity number 207043

    Website design ©CalmView


    + 44 207 451 2500
    (Lines open Mon-Fri, 9:00-17:00. Excludes bank holidays)

    6-9 Carlton House Terrace, London SW1Y 5AG

    Email Us →


    Subscribe to our newsletters to be updated with the
    latest news on innovation, events, articles and reports.

    Subscribe →

    © CalmView