## The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |

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Page 38

be fastened at the end C , and the other end B , be carried quite round , then the space comprehended is called a

be fastened at the end C , and the other end B , be carried quite round , then the space comprehended is called a

**circle**; and the curve line described by the point B , is called the circumference or the periphery of the**circle**... Page 39

is called the semidiameter or radius , so is any line from the centre to the circumference : whence all radii of the same or of equal

is called the semidiameter or radius , so is any line from the centre to the circumference : whence all radii of the same or of equal

**circles**are equal . 15. The diameter of a**circle**is a right line drawn thro ' the centre ... Page 40

A sector of a

A sector of a

**circle**is a part thereof less than a semicircle , which is contained between two radii and an arc : thus the space contained between the two radii CH , CB , and the arc HB is a sector . fig . 8 . 20. Page 41

... is the sine of the arc HB , or of its supplement ADH . fig . 8 . 28. The measure of a right - lined angle , is the arc of a

... is the sine of the arc HB , or of its supplement ADH . fig . 8 . 28. The measure of a right - lined angle , is the arc of a

**circle**swept from the angular point , and G 1 contained between the two lines that form the angle GEOMETRY . 41. Page 42

Hence angles are greater or less according as the arc described about the angular point , and terminated by the two sides , contains a greater or less number of degrees of the whole

Hence angles are greater or less according as the arc described about the angular point , and terminated by the two sides , contains a greater or less number of degrees of the whole

**circle**. 29. The sine , tangent , and secant of an arc ...### What people are saying - Write a review

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### Common terms and phrases

acres altitude angle Answer arch base bearing called centre chains chord circle Co-sec Co-sine Co-tang column compasses contained decimal degrees Dep Lat difference direct Dist distance divided divisions draw drawn east edge equal EXAMPLE extended feet figures fixed four fourth give given glass greater ground half hand height Hence Horizon inches laid land Lat Dep latitude length less logarithm manner marked measure meridian method minutes multiplied natural object observed opposite parallel perches perpendicular plane pole PROB proportion Quadrant quotient radius reduce remainder right angles right line root rule scale Secant sect side sights sine square station Sun's suppose survey taken Tang tangent theo third triangle true whole

### Popular passages

Page 38 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.

Page 25 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.

Page 199 - RULE. From half the sum of the three sides subtract each side severally.

Page 106 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.

Page 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.