 | Charles William Hackley - 1847 - 248 pàgines
...PROP. xix. If two planes be perpendicular to each other, a straight line drawn in one of the planes perpendicular to their common section will be perpendicular to the other plane. Let the plane VO be perpendicular to the plane XZ, and let OW be their common section. In the plane VO... | |
 | Elias Loomis - 1849 - 252 pàgines
...of the other two, and the three planes are perpendicular to each other. PROPOSITION VII. TIIEOEEM. If two planes are perpendicular to each other, a straight...section, will be perpendicular to the other plane. For in the plane MN, draw CD through the point B perpendicular to EF. Then, because the planes AE and... | |
 | Elias Loomis - 1857 - 242 pàgines
...plane of the other two, and the three planes are perpendicular to each other. PROPOSITION VII THEOREM. If two planes are perpendicular to each other, a straight...section, will be perpendicular to the other plane. Let the plane AE be perpendicular to the plane MN, and let the line AB be drawn in the plane AE perpendicular... | |
 | Elias Loomis - 1858 - 256 pàgines
...plane of the other two, and the three planes are perpendicular to each other. PROPOSITION VII THEOREM. If two planes are perpendicular to each other, a straight...section, will be perpendicular to the other plane. Let the plane AE be perpendicular to the plane MN, and let the line AB be drawn in the plane AE perpendicular... | |
 | Benjamin Greenleaf - 1862 - 532 pàgines
...(Art. 391) ; hence, since that angle is a right angle, the two planes are perpendicular to each other. 411. Cor. When three straight lines, as AB, CD, EF,...perpendicular to the plane M N. For, in the plane SIN, draw EF, through the point B, perpendicular to CD ; then, since the planes AC, MN are perpendicular,... | |
 | Benjamin Greenleaf - 1861 - 638 pàgines
...(Art. 391) ; hence, since that angle is a right angle, the two planes are perpendicular to each other. 411. Cor. When three straight lines, as AB, CD, EF,...CD; then will AB be perpendicular to the plane M N. BOOK VII. For, in the plane MN, draw EP, through the point B, perpendicular to CD ; then, since the... | |
 | Benjamin Greenleaf - 1862 - 518 pàgines
...(Art. 391) ; hence, since that angle is a right angle, the two planes are perpendicular to each other. 411. Cor. When three straight lines, as AB, CD, EF,...; then will AB be perpendicular to the plane M N. BOOK VII. D For, in the plane MN, draw EF, through the point B, perpendicular to CD ; then, since the... | |
 | Benjamin Greenleaf - 1863 - 504 pàgines
...perpendicular to each other, each of those lines is perpendicular to the plane of the other two, aud the three planes are perpendicular to each other....; then will AB be perpendicular to the plane M N. BOOK VII. D For, in the plane MN, draw EF, through the point B, perpendicular to CD ; then, since the... | |
 | Benjamin Greenleaf - 1866 - 328 pàgines
...straight lines, as AB, CD, EF, are perpendicular to each other, each of those lines is per-* pendicular to the plane of the other two, and the three planes...plane M N. For, in the plane MN, draw EF, through tho point B, perpendicular to CD ; then, since the planes AC, MN are perpendicular, the angle ABE is... | |
 | Gerardus Beekman Docharty - 1867 - 474 pàgines
...PROPOSITION XVI. If tieo planes be perpendicular to each other, a straight line drawn in one of the planes perpendicular to their common section will be perpendicular to the other plane. * Let the plane VO be perpendicular to the plane XZ, and let OW be their common section. In the plane VO... | |
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If two planes are perpendicular to each other, a straight line drawn in one of them, perpendicular to their common section, will be perpendicular to the other plane. 
