| Charles Hutton - Measurement - 1788 - 703 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... | |
| Samuel Webber - Mathematics - 1801
...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... | |
| Charles Hutton - Mathematics - 1807
...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 the circle, is an angle of 90 degrees; and the** sum of the three angles of every triangle, or two right angles, is equal to 1 80 degrees. Therefore,... | |
| Samuel Webber - Mathematics - 1808
...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... | |
| Peter Nicholson - 1809
...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... | |
| Charles Hutton - Mathematics - 1812
...a semicircle contains 180 degrees, and a quadrant 90 degrees. 3. The measure of an angle (Def. 58, **Geom.) is an arc of any circle contained between the...of the circle, is an angle of 90 degrees ; and the** sum of the three angles of every triangle, or two right angles, is equal to ISO degrees. Therefore,... | |
| Encyclopaedia Perthensis - 1816
...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... | |
| Encyclopedias and dictionaries - 1816
...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... | |
| Charles Hutton - Mathematics - 1816
...a simicirclo contains 130 degrees, and aquadi-ant 90 degrees. 3 The measure of an angle (Di-f. 58, **Geom.) is an arc of any circle contained between the...angle, the angular point being the centre ; and it** ia estimated by the numiier of degrees contained In that arc. Hence, a right angle, being measured... | |
| Charles Hutton - Mathematics - 1822
...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,... | |
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