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 Books Books 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. 58. The Measure... A Course of Mathematics: For the Use of Academies, as Well as Private ... - Page 378
by Charles Hutton - 1831 ## A Treatise on Mensuration, Both in Theory and Practice

Charles Hutton - Measurement - 1788 - 728 pages
...femicircle contains 1 80 degrees, and a quadrant 90 degrees. 57. The meafureofa right-lined angle, is. an arc of any circle contained between the two...which form that angle, the angular point being the center; and it is eftimated by the number of degrees contained '' ' in that arc. Hence a right-angle... ## Mathematics: Compiled from the Best Authors and Intended to be the ..., Volume 1

Mathematics - 1801 - 426 pages
...semicircle contains 1 80 degrees, and a quadrant 90 degrees. / 57. The measure of a rightlined angle is an arc of any circle, contained between the two....which form that angle, the angular point being the <?entrc ; and it is estimated by the nuaii bcr of degrees, contained in that arc. Hence a, right angle... ## Mathematics: Compiled from the Best Authors, and Intended to be ..., Volume 1

Mathematics - 1808 - 470 pages
...semicircle contains 1 80 degrees, and a quadrant 90 degrees, 57. The measure of a rightlined angle is an arc of any circle, contained between the two...degrees, contained in that arc. Hence a right angle is an angle of 90 degrees. 58. Identical figures are such, as have all the sides and all the angles... ## The principles of architecture, Volume 1

Peter Nicholson - 1809 - 428 pages
...ab, and bc, will be the two sides containing that angle. 53. The measure of any right lined angle, is an arc of any circle contained between the two lines which form the angle, the angular point being in the centre, as K. Thus . if the arc bed be double of the arc... ## A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - Mathematics - 1811
...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 the circle, is an angle of 90 degrees ; and the stim of the three angles of every triangle, or two right angles, is equal to 180 degrees. Therefore,... ## A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - Mathematics - 1811
...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 between the two lines which form that angle, the an gi ilar point being the centre; and it is estimated by the number of degrees contained in that arc.... ## Encyclopaedia Perthensis; Or Universal Dictionary of the Arts ..., Volume 10

...a femicircle contains 180 degres, and a quadrant 90 degrees. 41. fhf MEASURE of a RECTILINEAL ANGLS is an arc of any circle contained between the two...angle, the angular point being the centre, and it is eftimated by the number of degrees in that arc. Fig. 25. 42. IDENTICAL FIGURES are fuch as have all... ## Encyclopaedia Perthensis; or, Universal dictionary of Knowledge ..., Volume 10

Encyclopaedia Perthensis - 1816 - 764 pages
...a femicircle contains 180 degres, and a quadrant 90 degrees. 41. The MEASURE of a RECTILINEAL ANGLE is an arc of any circle contained between the two...angle, the angular point being the centre, and it is eftimated by the number of degrees in that arc. Fig. 15. 4t. IDENTICAL FIGURES are fuch as liavc all... ## A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - Mathematics - 1822 - 618 pages
...a semicircle contains 100 degrees, and a quadrant 90 degrees. 3. The measure of an angle (Def. 58, Geom.) is an arc of any circle contained between the...centre ; and it is estimated by the number of degrees continued in that arc. Hence, a right angle, being measured by a quadrant, or quarter of the circle,... 