| Euclides - 1816 - 528 pages
...plane DE pass through AB, and let CE be the common section of the planes DE, CK ; take any point F H **in CE, from which draw FG in the plane DE at right angles to CE : And** because AB is perpendicular to the plane CK, therefore it is also perpendicular to every straight line... | |
| John Playfair - 1819 - 317 pages
...at right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section **of the planes DE, CK ; take any point F in CE, from...draw FG in the plane DE at right angles to CE : And** because AB is perpendicular to the plane CK, therefore it is also perpendicular to every straight line... | |
| Peter Nicholson - Mathematics - 1825 - 372 pages
...angles to the plane CK. Let any plane DE pass through AB and let CE be the common section о the planet, **DE, CK ; take any point F in CE, from which draw FG in the plane DE at** rieht angles to CE: And be- С FBE саше AB is perpendicular to the plane CK, therefore it is also... | |
| Euclid, John Playfair - Euclid's Elements - 1826 - 320 pages
...is at right angles to the plane CK. Let any plane DEpass through AB,and letCE be the eommon seetion **of the planes DE, CK; take any point F in CE, from** whieh draw FG in the plane DEat right angles to CE : And beeause AB is perpendieular to the plane CK,... | |
| Robert Simson - Trigonometry - 1827 - 513 pages
...at right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section **of the planes DE, CK ; take any point F in CE, from which draw FG** t 11. 1. in the plane DE at rightf angles to CE: and because AB is perpendicular *3Def. 11. to the... | |
| John Playfair - Geometry - 1829 - 186 pages
...through AB is perp. to the plane CK. Let any plane DE pass through AB, and let CE be the common section **of the planes DE, CK; take any point F in CE, from which draw FG in the plane DE** perp. to CE. Because AB is perp. to the plane CK, it is also perp. to DGAH every line meeting it in... | |
| John Playfair - Euclid's Elements - 1833 - 333 pages
...plane DE pass through AB, and let CE be the common section of the planes DE,CK ; take any point Fin **CE, from which draw FG in the plane DE at right angles to CE : And** because AB is perpendicular to the plane CK, therefore it is also perpendicular to every straight line... | |
| Euclid - 1835 - 513 pages
...at right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section **of the planes, DE, CK ; take any point F in CE, from...draw FG in the plane DE at right angles to CE : And,** because AB is perpendicular to the plane CK, therefore it is also perpendicular to every straight line... | |
| John Playfair - Geometry - 1837 - 318 pages
...at right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section **of the planes DE, CK ; take any point F in CE, from...draw FG in the plane DE at right angles to CE : And** because AB is perpendicular to the plane CK, therefore it is also perpendicular to every straight lino... | |
| A. Bell - Conic sections - 1837 - 164 pages
...at right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section **of the planes DE, CK ; take any point F in CE, from which draw FG in the plane** *> *t DE at right angles to CE. And because AB is perpendicular to the plane CK, therefore it is also... | |
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