Credit: ©The Royal Society
    Image number: RS.15344

    Diagram

    Date
    17th century
    Creator
    Unknown, Artist
    Object type
    Archive reference number
    Manuscript page number
    p6
    Material
    Dimensions
    height (page): 305mm
    width (page): 189mm
    Subject
    Description
    This document by John Collins (although not in his hand) provides solutions related to 'problemata triangularia', as seen in triangles insisting upon the base of a circle. His solutions are written out as well as demonstrated synthetically.
    Transcription
    If there be two quantities given and that it hold As the fist to the second, so the summe of both to a fourth, then the summe of the two given is a mean Proportional between the first and the summe of the first, second and fourth.
    Or thus, If as the first to the second, so the excess of the second about the first to a fourth, Then the second is a mean proportional between the fist and the summe of the second and fourth.
    The Analysis upon the regresse of this is to be examined.
    Transcribed by the Making Visible project
    Related fellows
    John Collins (1625 - 1683, British) , Mathematician, Mathematician
    Associated place
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          > United Kingdom
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