A Treatise on Mensuration: Both in Theory and PracticeSaint, 1770 - 646 pages |
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Page xxi
... called geometry ( a word taken from ancient use , because it was first applied only to measuring the earth and fix- ing the limits of poffeffions ) though the name seemed very ridiculous to Plato , who substitutes in its place that more ...
... called geometry ( a word taken from ancient use , because it was first applied only to measuring the earth and fix- ing the limits of poffeffions ) though the name seemed very ridiculous to Plato , who substitutes in its place that more ...
Page 1
... called a right line , as AB ; and if the parts continually vary their directions , it is a curve line , as CD . An angle is the mutual inclination of two lines which meet . A If If they be right lines , it is called a A. ...
... called a right line , as AB ; and if the parts continually vary their directions , it is a curve line , as CD . An angle is the mutual inclination of two lines which meet . A If If they be right lines , it is called a A. ...
Page 2
... called a rectilineal or a plane angle , as A. If they be curves , it is a curvilineal angle , as B. If the angle be made by a right line and a curve , it is a mixt angle , as C. The point where the two lines , or legs of the angle ...
... called a rectilineal or a plane angle , as A. If they be curves , it is a curvilineal angle , as B. If the angle be made by a right line and a curve , it is a mixt angle , as C. The point where the two lines , or legs of the angle ...
Page 4
... A line drawn between the two op- pofite angles of a quadrilateral , is called a diagonal , as GII . Plane figures of more than four fides are , in Plain 4 Part I. GEOMETRICAL DEFINITIONS . An ifofceles triangle is that which hath ...
... A line drawn between the two op- pofite angles of a quadrilateral , is called a diagonal , as GII . Plane figures of more than four fides are , in Plain 4 Part I. GEOMETRICAL DEFINITIONS . An ifofceles triangle is that which hath ...
Page 5
... called a trigon , and the latter a tetragon . A circle is a plane figure bounded by a curve ( ADBEĂ ) called the circumference , every point of which is at the fame diftance from a cer- A tain point ( C ) within , called the center ...
... called a trigon , and the latter a tetragon . A circle is a plane figure bounded by a curve ( ADBEĂ ) called the circumference , every point of which is at the fame diftance from a cer- A tain point ( C ) within , called the center ...
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