The compleat surveyor containing the whole art of surveying of land by the plain table, theodolite, circumferentor, and peractor ... : together with the taking of all manner of heights and distances, either by William Leybourn.
About this Item
Title
The compleat surveyor containing the whole art of surveying of land by the plain table, theodolite, circumferentor, and peractor ... : together with the taking of all manner of heights and distances, either by William Leybourn.
Author
Leybourn, William, 1626-1716.
Publication
London :: Printed by R. & W. Leybourn, for E. Brewster and G. Sawbridge ...,
1653.
Rights/Permissions
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Subject terms
Surveying -- Early works to 1800.
Link to this Item
http://name.umdl.umich.edu/A48331.0001.001
Cite this Item
"The compleat surveyor containing the whole art of surveying of land by the plain table, theodolite, circumferentor, and peractor ... : together with the taking of all manner of heights and distances, either by William Leybourn." In the digital collection Early English Books Online 2. https://name.umdl.umich.edu/A48331.0001.001. University of Michigan Library Digital Collections. Accessed June 17, 2025.
Pages
descriptionPage 30
PROB. XXXIII. A Trapezia being given, how, from a point
limited in any side thereof, to draw a line which shall di∣vide the same
into two parts in proportion as two given lines.
[illustration]
THe Trapezia given is ABCD, and it is required from the point
H, to draw a line which shall divide the Trapezia in proportion as O to
Q.
First, Prolong the side CD, and reduce the whole Trapezia
into the Triangle HEF by the 30 Pro∣bleme, then divide the line EF in
proportion as O to Q, which will fall in the point G, therefore draw the line
HG which shall divide the Trapezia into two parts in proportion as O to Q,
which was required,
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