| Nathaniel Dwight - 1816 - 220 páginas
...A. The circumference of every circle is supposed to be divided into 360 equal parts called degrees ; each degree into 60 equal parts called minutes ; and each minute into 60 seconds. Q. What is a meridian ? A. It is a great circle cutting the equator at right angle's', and... | |
| Thomas Keith - 1817 - 306 páginas
...The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ;...and each minute into 60 equal parts, called seconds. The angles are measured by the number of degrees cut off from the circle, by the lines which form the... | |
| John Gummere - 1817 - 384 páginas
...determined. 2. The periphery of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ;...and each minute into 60 equal parts, called seconds, See. I 3. The measure of- an angle is the arc of a circle, contained between the two lines that form... | |
| Abel Flint - 1818 - 184 páginas
...divides the Circle into two equal parts, called Semicircles ; as AB or DE. Fig 5. 14. The Circumference of every Circle is supposed to be divided into 360...and each Minute into 60 equal parts, called Seconds ; and these into Thirds, &c. Note. Since all Circles are divided into the same number of Degrees, a... | |
| Miles Bland - 1819 - 444 páginas
...unanimously agreed to divide the circumference of the circle into 36o equal parts called Degrees ; each degree into 60 equal parts called Minutes ; and...each minute into 60 equal parts called Seconds, &c. This method appeared to the Greek Geometers to afford some facilities for calculations, in consequence... | |
| Miles Bland - 1819 - 442 páginas
...unanimously agreed to divide the circumference of the circle into 36o equal parts called Degrees ; each degree into 60 equal parts called Minutes; and...each minute into 60 equal parts called Seconds, &c. This method appeared to the Greek Geometers to afford some facilities for calculations, in consequence... | |
| William Hawney - 1820 - 336 páginas
...The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes :...and each minute into 60 equal parts, called seconds. Angles are measured by the number of degrees cut oft'from the circle, by the lines which form the angles.... | |
| Thomas Simpson - 1821 - 426 páginas
...the peripheries of circles, but also that certain right lines, in and about the circle, be supposed divided into some assigned number of equal parts....and each minute into 60 equal parts, called seconds, or second minutes, <Jc. Any part of the periphery is called an arch, and is measured by the number... | |
| Robert Gibson - 1821 - 594 páginas
...equal parts, called semicircles; and is double theradius,as AB or DE. fig. 8. 16. The circumference of every circle is supposed to be divided into 360...60 equal parts called minutes, and each minute into 00 equal parts called seconds, and- these into thirds, fourths, &c. these parts being greater or less... | |
| Euclid, Robert Simson - 1821 - 514 páginas
...arch AC is called the measure of the angle ABC. II. The circumference of a circle is supposed to lie divided into 360 equal parts called degrees; and each...each minute into 60 equal parts called seconds, &c. And as many degrees, minutes, seconds, &c. as are contained in any arch, of so many degrees, minutes,... | |
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