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Nine geometricall exercises, for young sea-men and others that are studious in…

Published: 1669
Length: 46,645 words
Reading: ~3 hours
Divisions: 262

From the title page

Nine geometricall exercises, for young sea-men and others that are studious in mathematicall practices: containing IX particular treatises, whose contents follow in the next pages. All which exercises are geometrically performed, by a line of chords and equal parts, by waies not usually known or practised. Unto which the analogies or proportions are added, whereby they may be applied to the chiliads of logarithms, and canons of artificiall sines and tangents. By William Leybourn, philomath.

London printed by James Flesher, for George Sawbridge, living upon Clerken-well-green anno Dom. 1669.

Original spelling, as transcribed by the Text Creation Partnership.

Front matter
FrontispieceVera Effigies Gulielmi Leybourn, Philom. anno Aetatis 30
Title page
Table of contentsTHE CONTENTS Of the ſeverall EXERCISES.
To the reader
Advert for mathematical instruction books and instrumentsArts and Sciences MATHEMATICALL Profeſſed and Taught by the Authour.
PartADVERTISEMENT.

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Exercise 1GEOMETRICALL PROPOSITIONS and THEOREMS, Neceſſary to be known and practiſed for the more eaſie…
11 sections
TheoremsTrigonometricall Theorems.
Exercise 2THE SOLƲTION Of Right-lined TRIANGLES By the LINES of EQƲAL PARTS, & CHORDS. The Second EXERCISE.
2 solutions
Exercise 3THE DIMENSION Of Sphericall TRIANGLES BY A LINE OF CHORDS. The Third EXERCISE.
3 sections
Exercise 4To project the SPHERE Upon the Plain of the MERIDIAN BY A LINE OF CHORDS. Whereby the Sides and Angles of…
13 sections
Exercise 5THE VARIETY OF SPHERICALL PROBLEMS Naturally ariſing out of every Sphericall Triangle, both Right and…
2 solutions
Exercise 6PROPOSITIONS ASTRONOMICALL, Uſefull in the Practice of NAVIGATION: Performed by the reſolving of ſeverall…
16 propositions
Exercise 7The foregoing PROPOSITIONS applied to Practice: By which the Ingenious young Sea-man may make them…
4 propositions
Exercise 8PROPOSITIONS GEOGRAPHICALL, Shewing how the Diſtance of any two Places upon the Terreſtriall Globe may be…
3 propositions
Exercise 9The Doctrine of RIGHT-LINED TRIANGLES applied to Practice in NAVIGATION: Whereby Sundry Nauticall Queſtions…
3 sections
Back matter
ChartMercators Chart.

Nine geometricall exercises, for young sea-men and others that are studious in…

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