A Treatise on Land-surveying, in Six Parts ...

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H. Baldwin and son, 1799 - Surveying - 193 pages
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Page 4 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Page 23 - To draw a Line parallel to a given Line, at a given Distance from it.
Page 167 - Apply the straight edge of a thin, clear piece of lanthorn-horn to the crooked line, which is to be reduced, in such a manner, that the small parts cut off from the crooked figure by it, may be equal to those which are taken in : which equality of the parts included and excluded you...
Page 39 - Draw the diameter AB and divide it into as many equal parts as the polygon is to have sides (in this case five).
Page 168 - ... by a little practice ;) then, with a pencil, draw a line by the edge of the horn.
Page 168 - ... it is likely that some of the parts will be taken a small matter too little, and others too great ; so that they will, upon the whole, in all probability, very nearly balance one another. After all the fields and particular parts are thus computed separately, and added all together into one...
Page 33 - В ч-ni the divisions, anil the crossimr* of equal numbers, are points in the circle arc. 29. To find the center and radius of a circle thiir will tangent the three sides of a triangle.
Page 118 - To part from a Rectangle or Triangle, any proposed Quantity of Land, upon a Line on which there are Offsets, when the Area of those Offsets is to be considered as Part of the Portion to be parted off". RULE. — Find the area of the offsets, which subtract from the portion to be parted off, and then proceed with the remainder, as directed in the preceding problems.
Page 1 - Lines are equally diftant in all their parts, and if produced ever fo far both ways would never meet. 5. An Angle is the meeting of two lines in a point, but not fo as to form one straight line.
Page 6 - ... distant from a point within, called the centre. In popular language, however, the circumference itself is often called a circle. Circular. Semicircles are half circles. Semicircular. A Segment. of a circle is a part of a circle cat off by a straight line.

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