| Pupil teachers - 1880 - 1516 páginas
...respectively equal ?' Answer him. 5.Explain clearly why the following definition is insufficient: @' **A plane rectilineal angle is the inclination of two straight lines to one another.'** Define obtuse angle, isosceles triangle, rhomboid. 6 ・ De6neap @ anesuper 丘 c @ es ， ac 卜 d... | |
| Euclid, F. B. Harvey - 1880 - 119 páginas
...Elementary Geometry, which refers entirely to the Plane Rectilineal Angle spoken of in Definition 9. 9. **A PLANE RECTILINEAL ANGLE is the inclination of two straight lines to** each other, which meet together, but are not in the same straight line. This definition is a very important... | |
| Marianne Nops - 1882
...of two lines to one another in a plane, which meet together but are not in the same direction.' 9. ' **A plane rectilineal angle is the inclination of two...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... | |
| Henry Barnard - 1882
...the error of confusing angles with triangles. For this purpose, Euclid's definition is of little use. **e for those who pretend to the highest improvement...natural defects in the understanding capable of amen** For, replies the boy, "What is the meaning of ' the inclination of two straight lines to one another?... | |
| 1882 - 1114 páginas
...the error of confusing angles with triangles. For this purpose, Euclid's definition is of little use. **"A plane rectilineal angle is the inclination of two...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?... | |
| Edwin Abbott Abbott - 1883 - 225 páginas
...common error of confusing angles with triangles. For this purpose Euclid's definition is of little use. **"A plane rectilineal angle is the inclination of two...meet 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... | |
| Euclid, Isaac Todhunter - 1883 - 426 páginas
...which any two points being taken, the straight line between them lies wholly in that superficies. 9. **A plane rectilineal angle is the inclination of two...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... | |
| Euclides - 1883 - 96 páginas
...line, is a measure of the magnitude of the angle. Note. — Euclid defines a plane rectilineal angle as **"the inclination of two straight lines to one another,...together, but are not in the same straight line."** Here the synonym for angle, "the inclination of two straight lines," has this fault, that when the... | |
| Edward Royall Tyler, William Lathrop Kingsley, George Park Fisher, Timothy Dwight - 1883 - 872 páginas
...noticed further on. The definition of a plane rectilineal angle is, according to Euclid (Todhunter's ed.) **"the inclination of two straight lines to one another...meet together but are not in the same straight line"** — a definition which limits the angle to less than two right angles. Of definitions, which differ... | |
| Stewart W. and co - 1884
...of two lines to one another in a plane, which meet together, but are not in the same direction. IX. **A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line.** An angle is named from three or one letters, as ABC or B. X. When a straight line standing on another... | |
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