 | Gerardus Beekman Docharty - 1867 - 474 σελίδες
...and the other two on the two sides, that which stands at the angular point is read in the middle. 57. The Circumference of every circle is supposed to be...equal parts, called Degrees ; and each degree into 60 Minutes, each minute into 60 Seconds, and so on. Hence a semicircle contains 180 degrees, and a quadrant... | |
 | Asa Smith - 1868 - 86 σελίδες
...The circumference of every circle ¡в supposed to be divided into and equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. Circumpolar Start.— Those stars which revolve around the pole without... | |
 | 1869 - 104 σελίδες
...formed by straight lines, from stars or points, meeting at the eye of the observer. For this purpose the circle is supposed to be divided into 360 equal parts, called Degrees, and each of these degrees into 60 equal parts called Minutes, and each minute into 00 equal seconds. A quarter... | |
 | Anthony Nesbit - 1870 - 578 σελίδες
...circumference, which is everywhere equidistant from a certain point within it, called the centre. 39. 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.... | |
 | Charles Davies - 1870 - 392 σελίδες
...the six parts is given. 21. For the purpose of trigonometrical calculation, the circumference of the circle is supposed to be divided into 360 equal parts, called degrees ; each degree is supposed to be divided into 60 equal parts, called minutes ; and each minute into... | |
 | Elias Loomis - 1871 - 302 σελίδες
...Trigonometry treats of plane triangles; Spherical Trigonometry treats of spherical triangles. (19.) The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 minutes, and each minute into 60 seconds. Degrees, minutes, and seconds are designated... | |
 | Henry Bartlett Maglathlin - 1872 - 220 σελίδες
...circle is any straight line drawn through the center, and terminated by the circumference, as AE. 105. The circumference of every circle is supposed to be divided into 360 equal parts, called Degrees. BISO* 270° What is a Circle ? The Circumference of a circle ? What is an Arc of a cirele ? A Diameter... | |
 | Hugo Reid - 1872 - 148 σελίδες
...two circumferences would exactly coincide. Division of the Circumference. 34. The circumference of a circle is supposed to be divided into 360 equal parts, called degrees, and marked °. Each degree is divided into 60 equal parts, called -minutes, and marked '. Each minute is... | |
 | William Frothingham Bradbury - 1872 - 262 σελίδες
...triangles. 17. The circumference of every circle is dividad into 360 equal parts, called degrees ( ° ), each degree into 60 equal parts, called minutes ( ' ), and each minute into 60 equal parts, called seconds ( " ). 18. As angles at the centre valy as their arcs, or arcs as their... | |
 | William Alexander Myers - 1873 - 238 σελίδες
...treats of plane triangles ; spherical trigonometry treats of spherical triangles. The circumference of a circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60 minutes, and each minute into 60 seconds. Degrees, minutes, and seconds are designated... | |
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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. 
