 | Āryabhaṭa - 1878 - 100 pages
...their ijircumferences meet in any point, but do not cut one •ther. XV. A plane rectilineal angle is the inclination of two straight lines to one another,...meet together, but are not in the same straight line. NB In the figure subjoined B is an angle and is thus expressed : " Angle AB 0." A BC XVI. When a straight... | |
 | Moffatt and Paige - 1879 - 428 pages
...in a plane, which meet together, but are not in the same straight line. 9. A plane rectilineal angle is the inclination of two straight lines to one another,...meet together, but are not in the same straight line. ANB — When several angles are at one point, B, either of them is expressed by three letters, of which... | |
 | Alfred Hiley - 1879 - 228 pages
...; but it cannot be contained within. fewer than three straight lines. X. A plane rectilineal angle is the inclination of two straight lines to one another...meet together, but are not in the same straight line. Thus the two straight lines CA and BA, meeting together at the point A, make the angle BAC, or, as... | |
 | Euclides - 1879 - 146 pages
...formed by two straight lines, and is not required in the first two books.] 9. A plane rectilineal angle is the inclination of two straight lines to one another,...meet together, but are not in the same straight line. [Thus the inclination of the lines OA, OB is called the angle AOB, or BOA, or the angle at O. O Observe... | |
 | Education - 1901 - 702 pages
...advantage will be found to lie with Euclid. I. DEFINITION OF AN ANGLE. Euclid : " A plane rectilineal angle is the inclination of two straight lines to one another,...together, but are not in the same straight line." Modern writers define this concept variously. Davies : " An angle is the amount of divergence of two... | |
 | Isaac Todhunter - Euclid's Elements - 1880 - 426 pages
...another in a plane, which meet together, but are not in the same direction. 9. A plane rectilineal angle is the inclination of two straight lines to one another,...meet together, but are not in the same straight line. Note. When several angles are at one point B, any one of them is expressed by three letters, of which... | |
 | Education - 1900 - 1050 pages
...advantage will be found to lie with Euclid. I. DEFINITION OF AN ANGLE. Euclid: "A plane rectilineal angle is the inclination of two straight lines to one another,...together, but are not in the same straight line." Modern writers define this concept variously. Davies : " An angle is the amount of divergence of two... | |
 | Henry Barnard - Education - 1882 - 1112 pages
...with triangles. For this purpose, Euclid's definition is of little use. "A plane rectilineal angle is the inclination of two straight lines to one another,...together, but are not in the same straight line." For, replies the boy, "What is the meaning of ' the inclination of two straight lines to one another?... | |
 | Marianne Nops - 1882 - 278 pages
...in a plane, which meet together but are not in the same direction.' 9. ' A plane rectilineal angle is the inclination of two straight lines to one another,...meet together but are not in the same straight line.' Def. S includes angles formed by two curved lines, or a straight and a curved line. With these we shall... | |
 | Education - 1882 - 1112 pages
...with triangles. For this purpose, Euclid's definition is of little use. "A plane rectilineal angle is the inclination of two straight lines to one another,...together, but are not in the same straight line." For, replies the boy, "What is the meaning of 'the inclination of two straight lines to one another?... | |
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A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. 
