 | Thomas Baker - Railroads - 1850 - 244 pages
...&c. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. 28. The measure of an angle is an arc of any circle, contained between the two lines which form the angle, the angular point being the centre ; and it is estimated by the number of degrees contained... | |
 | John Weale - 1850 - 590 pages
...plane, and this plane is called a section. Definitions of solids : 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 the centre. A prism is a solid, the ends of which are similar and... | |
 | Oliver Byrne - Engineering - 1852 - 598 pages
...so on. Hence a semicircle contains 180 degrees, and a quadrant 90 degrees. The measure of any angle is an arc of any circle contained between the two...quadrant, or quarter of the circle, is an angle of 1I0 degrees ; and the sum of the three angles of every triangle, or two right angles, is equal to 180... | |
 | Edward Shaw - Architecture - 1852 - 426 pages
...and ab and b с 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 b с d be double of the arc... | |
 | Lucius D. Gould - Carpentry - 1853 - 234 pages
...etc. A semicircle, therefore, contains 180 degrees, and a quadrant 90 degrees. The measure of an angle is an arc of any circle contained between the two...form that angle, the angular point being the centre, Fig. 12, and is estimated by the number of degrees contained in that arc. ~PROBLEMS PLATE III. •... | |
 | Frederick Augustus Griffiths - Artillery drill and tactics - 1854 - 406 pages
...the relations, and calculations of the sides, and angles of plane triangles. The measure of an angle is an arc of any circle contained between the two...angle being measured by a quadrant, or quarter of a circle, is an angle of 90 degrees. The sum of the three angles of every triangle is equal to 180... | |
 | John Weale - Architecture - 1859 - 622 pages
...an angle or its vertex to the opposite side, called the base. 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 the centre. A solid is said to be cut by a plane when it is divided... | |
 | Frederick Augustus Griffiths - Artillery - 1859 - 426 pages
...the relations, and calculations of the sides, and angles of plane triangles. The measure of an angle is an arc of any circle contained between the two...angle being measured by a quadrant, or quarter of a circle, is an angle of 90 degrees. The sum of the three angles of every triangle is equal to 180... | |
 | Charles Hutton - Mathematics - 1860 - 1020 pages
...on. Hence a semicircle contains 180 degrees, and • quadrant 90 degrees. 08. The Measure of an angle is an arc of any circle contained between the two...lines which form that angle, the angular point being die c< litre ; and it is estimated by llie number of degrees contained in that ¡in-, 59. Lines, or... | |
 | William Grier - Mechanical engineering - 1861 - 316 pages
...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...estimated by the number of degrees contained in that arc. 59. Lines, or chords, are said to be Equidistant from the centre of a circle, when perpendiculars drawn... | |
| |
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... 
