 | John Hamilton Moore - 1807 - 586 σελίδες
...circles, whether great or fmall, are actually, or fuppofed to have, their circumference divided 11110360 equal parts, called degrees, and each degree into...minutes, and each minute into 60 equal parts, called féconds, and fu on into thirds, fourths, &c. All angles are msafurcd by an arch of a circle, defcribed... | |
 | Abel Flint - 1808 - 190 σελίδες
...equal parts, called Semicircles; asAB or DE. Fig. 5. 14. The Circumference of every Circle is supposcfl to be divided into 360 equal parts called Degrees...equal parts, called Seconds ;. and these into Thirds, 8tc. Note. Since all Circles are divided into the same number of Degrees, a Degree is not to be accounted... | |
 | Thomas Simpson - 1810 - 168 σελίδες
...and about the circle be supposed divided into some assigned number of equal parts. 2. The periphery of every circle is supposed to be divided into 360...and each minute into 60 equal parts, called seconds, or second minutes, &c. 3. Any part AB (fig. 1.) of t!u- periphery of the circle is called an arch,... | |
 | Euclid - 1810 - 554 σελίδες
...meeting BA, BC in A, C; the arch AC is called the measure of the angle ABC. II. The circumference of a circle is supposed to be divided into 360 equal parts...and 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,... | |
 | Thomas Simpson - 1810 - 152 σελίδες
...some assigned number of equal parts. 2. The periphery of every circle is supposed to be di-< vided into 360 equal parts, called degrees ; and each degree...and each minute into 60 equal parts, called seconds, or second minutes, &c. 3. Any part AB (fig. 1.) of the periphery of the circle is called an arch, and... | |
 | John Dougall - 1810 - 684 σελίδες
...other four watches. In modern Europe the day is divided into 2* equal parts called hours, each hour into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. It has been found by experiment at London, in a spot elevated 113 feet above the level of the sea,... | |
 | Abel Flint - 1813 - 214 σελίδες
...the Centre; and it divides the Circle into two equal parts, called Semicircles; as AB or DE. ,, 14. The Circumference of every Circle is supposed to be...equal parts, called Seconds; and these into Thirds, &tc. Note. Since all Circles are divided into the same number of Degrees, a Degree is not to be accounted... | |
 | Caleb Alexander - 1813 - 152 σελίδες
...The circumference of every circle, is supposed tobe divided into 360 equal parts, called degree»; and each degree, into 60 equal parts, called minutes;...equal parts, called seconds, and these into thirds, fourtUs, &c. 14. Parallel lines are equidistant from each other. 15 A figure, having three equal sides,... | |
 | Abner Alden - 1814 - 222 σελίδες
...earth ? A. By supposing the earth to be circumscribed by a .certain number of circles ; and each circle to be divided into 360 equal parts, called degrees...and each minute into 60 equal parts, called seconds. Q. What is a great circle ? A. A great circle is one, whose plane is supposed to pas through the centre... | |
 | Euclides - 1814 - 560 σελίδες
...of the angle ABC. II. The circumference of a circle is supposed to be divided into 360 equal part* called degrees, and each degree into 60 equal parts...and 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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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. 
