 | Peter Nicholson - 1845 - 430 σελίδες
...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
...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... | |
 | Thomas Baker - 1850 - 244 σελίδες
...&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 σελίδες
...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 - 1852 - 604 σελίδες
...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...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 180 degrees. Therefore,... | |
 | Oliver Byrne - 1852 - 600 σελίδες
...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 - 1852 - 426 σελίδες
...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
...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 - 1854 - 406 σελίδες
...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... | |
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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. 
