## A Treatise of Practical Surveying: Which is Demonstrated from Its First Principles ... |

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Página 24

The inclination of two lines meeting one another ( provided they do not make one

continued line ) or the opening between them , is

the inclination of the line AB to the line BC meeting each other in the point B , or ...

The inclination of two lines meeting one another ( provided they do not make one

continued line ) or the opening between them , is

**called**an angle . Thus fig . 4.the inclination of the line AB to the line BC meeting each other in the point B , or ...

Página 25

Plate 1 . 13. Acute and obtuse angles in general are

a right line CB . ( fig . 8. ) be fastened at the end C , and the other end B , be

carried quite round , then the space comprehended is

curve ...

Plate 1 . 13. Acute and obtuse angles in general are

**called**oblique angles . 14. Ifa right line CB . ( fig . 8. ) be fastened at the end C , and the other end B , be

carried quite round , then the space comprehended is

**called**a circle ; and thecurve ...

Página 27

And the line which terminates the tangent , that is , CK is

arc HB . fig . 8 . 26. What an arc wants of a quadrant is

thereof : Thus DH is the complement of the arc HB . 27. And what an arc wants of

a ...

And the line which terminates the tangent , that is , CK is

**called**the secant of thearc HB . fig . 8 . 26. What an arc wants of a quadrant is

**called**the complementthereof : Thus DH is the complement of the arc HB . 27. And what an arc wants of

a ...

Página 30

Acute and obtuse angled triangles are in general

, in all which may be

The perpendicular height of a triangle is a line drawn from the vertex to the base

...

Acute and obtuse angled triangles are in general

**called**oblique angled triangles, in all which may be

**called**the base , and the other two the sides . any side 42.The perpendicular height of a triangle is a line drawn from the vertex to the base

...

Página 31

A quadrilateral figure that is not a parallelogram , is

fig . 3 . 50. Figures which consists of more than four sides are

the sides are all equal to each other , they are

A quadrilateral figure that is not a parallelogram , is

**called**a trapezium . Plate 7.fig . 3 . 50. Figures which consists of more than four sides are

**called**polygons ; ifthe sides are all equal to each other , they are

**called**regular polygons .### Comentarios de la gente - Escribir un comentario

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### Términos y frases comunes

acres angle Answer base bearing called centre chains chord circle Co-sec Co-sine Co-tang column contained decimal difference direct distance divided division draw drawn east edge equal EXAMPLE feet field field-book figures four four-pole fourth give given greater ground half height Hence inches laid land Lat Dep length less logarithm manner measure method multiplied needle object observe opposite parallel perches perpendicular plain plane Plate pole prob PROBLEM proportion quantity quotient radius reduce remainder right angles right line root scale Secant sect side sights sine square station suppose survey taken Tang tangent theo THEOREM third triangle triangle ABC true turn variation whence whole

### Pasajes populares

Página 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.

Página 207 - ... that triangles on the same base and between the same parallels are equal...

Página 40 - 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.

Página 43 - Triangles upon equal bases, and between the same parallels, are equal to one another.

Página 103 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.

Página 31 - Figures which consist of more than four sides are called polygons ; if the sides are all equal to each other, they are called regular polygons. They sometimes are named from the number of. their sides, as a five-sided figure is called a pentagon, one of six sides a hexagon, &"c.

Página 31 - ... they are called regular polygons. They sometimes are named from the number of their sides, as a five-sided figure is called a pentagon, one of. six sides a hexagon, &c. but if their sides are not equal to each other, then they are called irregular polygons, as an irregular pentagon, hexagon, &c.

Página 45 - The hypothenuse of a right-angled triangle may be found by having the other two sides ; thus, the square root of the sum of the squares of the base and perpendicular, will be the hypothenuse. Cor. 2. Having the hypothenuse and one side given to find the other; the square root of the difference of the squares of the hypothenuse and given side will be the required side.

Página 265 - As the length of the whole line, Is to 57.3 Degrees,* So is the said distance, To the difference of Variation required. EXAMPLE. Suppose it be required to run a line which some years ago bore N. 45°.

Página 32 - Things that are equal to one and the same thing are equal to one another." " If equals be added to equals, the wholes are equal." " If equals be taken from equals, the remainders are equal.