 | John Reynell Morell - 1871 - 156 σελίδες
...common measure Fig. 9 (a). Fig- 9 (b). 90 16. To estimate the value of any arc of the circumference, it is supposed to be divided into 360 equal parts, called degrees; each degree is divided into 60 equal parts called minutes, each minute is divided into 60 seconds, &c. Degrees, minutes,... | |
 | 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... | |
 | 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 by the... | |
 | Charles Davies - 1874 - 346 σελίδες
...used in estimating latitude and longitude, and also iu measuring the motions of the heavenly bodies. The circumference of every circle is supposed to be...into 360 equal parts, called degrees. Each degree ia divided into CO minutes, and each minute into 60 seconds. / TABLE. 60 seconds' make 1 minute, marked... | |
 | Robert Griffith Hatfield - 1874 - 452 σελίδες
...abd, (see note to Art. 27,) theii each of the two angles is called a right angle. 131. — Definition. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; hence a semi-circle contains 180 degrees, a quadrant 90, &c. Fig. 90. 132. — Definition. The measure... | |
 | William Alexander Myers - 1874 - 207 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 by the... | |
 | Henry Bartlett Maglathlin - 1875 - 216 σελίδες
...circle is any straight line drawn through the center, and terminated by the circumference, as AE. 173. The circumference of every circle is supposed to be divided into 360 equal parts, called Degrees. •What is a Circle? The Circumference of a circle? What is an Arc of a circle ? A Diameter? How is... | |
 | Henry Bartlett Maglathlin - 1876 - 230 σελίδες
...circle is any straight line drawn through the center, and terminated by the circumference, as AE. 173. The circumference of every circle is supposed to be divided into 360 equal parts, called Degrees. 370* What is a Circle ? The Circumference of a circle ? What is an Arc of a circle ? A Diameter? How... | |
 | James Martin (of the Wedgwood inst, Burslem.) - 1876 - 334 σελίδες
...it. Ex. AB. The point where it touches the circle is called the point of contact. Ex. B. NOTE 1. — The circumference of every circle is supposed to be divided into 360 equal parts, called degrees, marked °. Hence, a semicircle will contain 180°; a quarter of a circle, or a quadrant, 80° ; the... | |
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The circumference of every circle is supposed to be divided into 360 equal parts, called degrees... 
