Short, but yet plain elements of geometry; shewing how by a brief and easy method, most of what is necessary and useful in Euclid, Archimedes, Appollonius, and other excellent geometricians, both ancient and modern, may be understood / written in French by F. Ignat. Gaston Pardies ; And render'd into English, by John Harris.

  • Pardies, Ignace Gaston, 1636-1673.
Date:
1717
Catalogue details

Licence: Public Domain Mark

Credit: Short, but yet plain elements of geometry; shewing how by a brief and easy method, most of what is necessary and useful in Euclid, Archimedes, Appollonius, and other excellent geometricians, both ancient and modern, may be understood / written in French by F. Ignat. Gaston Pardies ; And render'd into English, by John Harris. Source: Wellcome Collection.

    79/188 (page 65)
    LORE COSC SEC SLCC Ore) nore ELEMENTS GEOMETRY. BOOK V. Of Silids. Walt Right Line is faid to bé Right iipz ion a Plane, when it ftands on it my at Right Angles, juft like a Pillar Kyi} on the Ground, and is inclined Wi] no more to any one fide of the Plane, than ro the other, 2. Iwo ianes are Parallel. to each other, when all the Perpendiculars.that can be drawn between them, are equal. (That is, when they every where are equally diftant.) | 3. One Plane is Right or Perpendicular to another Plane, when, like a well-made Wall, ir inclines and leans on one fide no more than it does on the other. BE 4,8 if iN I ARNE EF Ge FD) oe