| Robert Simson - 1806 - 518 sider
...angles to a plane, when it makes right angles with every straight line meeting it in that plane. IV. **A plane is perpendicular to a plane when the straight...the two planes are perpendicular to the other plane.** V. The inclination of a straight line to a plane is the acute angle contained by that straight line... | |
| John Playfair - 1806 - 311 sider
...II. plane, when it makes right angles with every straight line which it meets in the plane, y. II. ' **A plane is perpendicular to a plane, when the straight lines drawn in one of the planes** perpendicular to the common section of the two planes are perpendicular to the other plane. I III.... | |
| John Mason Good - 1813
...angles with every straight line meeting it in that plane. 4. A plane is perpendicular to a plane, »hen **the straight lines drawn in one of the planes perpendicularly to the common section of the two planes,** arc perpendicular to the other plane. 5. The inclination of a straight line to a plane is the acute... | |
| Euclides - 1816 - 528 sider
...angles, to a plane, when it makes right angles with every straight line meeting it in that plane. IV. **A plane is perpendicular to a plane, when the straight...the two planes are perpendicular to the other plane.** V. The inclination of a straight line to a plane is the acute angle contained by that straight line,... | |
| John Mason Good - 1819
...straight line meeting it in that plane. 4. A plane is perpendicular to a plane, when the straiglit **lines drawn in one of the planes perpendicularly to...two planes, are perpendicular to the other plane.** 5. The inclination of a straight line to a plane is the acute angle contained by that straight line,... | |
| John Playfair - 1819 - 317 sider
...angles to a plane, when it makes right angles with every straight line which it meets in that plane. II. **A plane is perpendicular to a plane, when the straight lines drawn in one of the planes** perpendicular to the common section of the two planes, are perpendicular to the other plane. III. The... | |
| John Playfair - 1819 - 333 sider
...plane is perpendicular to a plane, when the straight lines drawn in one of the planes perpendicular **to the common section of the two planes, are perpendicular to the other plane.** III. The inclination of a straight line to a plane is the acute angle contained by that straight line,... | |
| George Crabb - 1823
...when it makes right angles with every straight line meeting it in that plane, as AB in fig. 36. — **A plane is perpendicular to a plane when the straight...of the two planes are perpendicular to the other,** as ABC, fig. 37. — The inclination of a straight line to a plane is the acute angle contained by... | |
| Peter Nicholson - 1825 - 372 sider
...angles to a plane, when it make! right angles with every straight line meeting it in that plane. IV. **A plane is perpendicular to a plane, when the straight...two planes, are perpendicular to the other plane.** V. The inclination of a straight line to a ¡.hue is the acute angle contained by that straight line,... | |
| Euclid, John Playfair - 1826 - 320 sider
...makes right angles with every straight line whieh it meets in that plane. n. A plane is perpendieular **to a plane, when the straight lines drawn in one of the planes** perpendieular to the eommon seetion of the two planes, are perpendieular to the other plane. III. The... | |
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