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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 minutes, each minute into 60 seconds, and so on. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. "
The Measure of the Circle: Perfected in January, 1845 - Page 70
by John Davis - 1854 - 156 pages
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The Accomplished Tutor: Or, Complete System of Liberal Education ..., Volume 1

Thomas Hodson - Education - 1806 - 576 pages
...each degree fubdividrd into 60 minutes, each minute into 60 feconds, and fo on ; hence a femicircle contains 180 degrees, and a quadrant 90 degrees, which...form a right angle, and half a quadrant, called an oftant, contains 45 degrees; for the meafure of crew right-line angle is an arc of a circle contained...
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A Course of Mathematics in Two Volumes for the Use of Academies as Well as ...

Charles Hutton - Mathematics - 1807 - 464 pages
...56) is supposed to be divided into 360 equal parts, called Degrees; also each degree into 60 Minutes, •each minute into 60 Seconds, and so on. Hence a...semicircle contains 180 degrees, and a quadrant 90 degrees. 3. The Measure of an angle (Def. 57, Geom.) is an arc of any circle contained between the two lines...
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Mathematics: Compiled from the Best Authors, and Intended to be ..., Volume 1

Samuel Webber - Mathematics - 1808 - 466 pages
...circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 minutes, each minute into 60 seconds, and so on. Hence a semicircle contains 1 80 degrees, and a quadrant 90 degrees, 57. The measure of a rightlined angle is an arc of any circle,...
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A Course of Mathematics: In Three Volumes : Composed for the Use of the ...

Charles Hutton - Mathematics - 1811 - 494 pages
...in Geom. Def. 56) is supposed to be divided into 360 equal parts, called Degrees ; also each degree into 60 Minutes, and each minute into 60 Seconds, and so on. Hence a semicircle contains 1 80 degrees, and a quadrant 90 degrees. 3. The Measure of an angle (Def. 57, Geom.) is an arc of any...
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A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - Mathematics - 1811 - 442 pages
...in Gebm. Def. 56) is supposed to be divided into 360 equal parts, called Degrees ; also each degree into 60 Minutes, and each minute into 60 Seconds, and so on. Hence a seinicircle contains 1 80 degrees, and a quadrant 90 degrees. 3. Th'e Measure of an angle (Def. 57,...
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A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - Mathematics - 1811 - 406 pages
...circle is supposed to be divided into 360 equnl parts, called Degrees : and each degree into 60 Minutes, each minute into 60 Seconds, and so on. Hence a semicircle contains 1 80 degrees, and a quadrant 90 degrees. 58. The Measure of an angle, is an arc of any circle contained...
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A Course of Mathematics: In Two Volumes : for the Use of Academies ..., Volume 1

Charles Hutton - Mathematics - 1816 - 610 pages
...to be divided into 360 equals p >rts, called Degrees : and each degree into 60 Minutes, each minutes into 60 Seconds, and so on. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. 58. The Measure of an angle, is an arc of any circle contained between the two lines •which form...
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A Course of Mathematics: In Two Volumes. For the Use of Academies ..., Volume 1

Charles Hutton - Arithmetic - 1818 - 646 pages
...is supposed to be divided into 360 equal parts, called Degrees ; also each degree into 60 Minutes, each minute into 60 Seconds, and so on. Hence a semicircle contains 1 80 degrees, and a quadrant 90 degrees. 3. The measure of an angle (Def. 58, Geom.) is an arc of any...
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A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - Mathematics - 1822 - 616 pages
...is supposed to be divided into 360 equal parts, called Degrees ; also each degree into 60 Minutes, each minute into 60 Seconds, and so on. Hence a semicircle contains 100 degrees, and a quadrant 90 degrees. 3. The measure of an angle (Def. 58, Geom.) is an arc of any...
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A Course of Mathematics for the Use of Academies: As Well as ..., Volume 1

Charles Hutton - Mathematics - 1825 - 608 pages
...circle is supposed to be divided into 360 equal parts, called Degrees : and each degree into 60 Minutes, each minute into 60 Seconds, and so on. Hence a semicircle contains 180 dearees, and a quadrant 90 degrees. 58. The Measure of an angle, is an arc of any circle contained...
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