 | William Grier - 1842 - 320 σελίδες
...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...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... | |
 | Peter Nicholson - 1845 - 430 σελίδες
...from 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... | |
 | John Bonnycastle - 1848 - 320 σελίδες
...60 equal parts, called minutes; and so on. 48. The measure of any right-lined angle is an arc of a circle contained between the two lines which form that angle, the angular point being the centre. Nate. The angle is estimated by the number of degrees contained in the arc ; whence a right angle is... | |
 | Peter Nicholson, Joseph Gwilt - 1848 - 750 σελίδες
...point, and ab and be 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 in к. Thus, if the arc ¿a/be double of the arc... | |
 | John Weale - 1850 - 590 σελίδες
...a 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... | |
 | Thomas Baker - 1850 - 244 σελίδες
...seconds, &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... | |
 | Edward Shaw - 1852 - 426 σελίδες
...point, 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 - 1853 - 234 σελίδες
...seconds, 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...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 - 1854 - 406 σελίδες
...treats of 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...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 - 1859 - 622 σελίδες
...fall from 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... | |
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Geom.) is an arc of any circle contained between the two lines which form that angle, the angular point being the centre ; and it is •estimated by the number of degrees contained in that arc. 
