 If two planes are perpendicular to each other, a line drawn in one of them perpendicular to their intersection is perpendicular to the other.  Solid Geometry - Page 267by Wooster Woodruff Beman, David Eugene Smith - 1900 - 139 pagesFull view - About this book
 | Arthur Schultze, Frank Louis Sevenoak - Geometry - 1902 - 394 pages
...PROPOSITION XVIII. THEOREM 503. If two planes are perpendicular to each other, a straight line drawn in one of them, perpendicular to their intersection, is perpendicular to the other. Hyp. Plane CE is ± to plane MN, and in CE line BA is J. to CD, the intersection of the two planes.... | |
 | Arthur Schultze, Frank Louis Sevenoak - Geometry - 1901 - 394 pages
...PROPOSITION XVIII. THEOREM 503. If two planes are perpendicular to each other, a straight line drawn in one of them, perpendicular to their intersection, is perpendicular to the other. Hyp. Plane CE is -L to plane MN, and in CE line BA is J_ to CD, the intersection of the two planes.... | |
 | Education - 1902 - 780 pages
...excess of a triangle. 2 Prove that if two planes are perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is perpendicular to the other plane. 3 Complete and demonstrate the following : the lateral area of a prism is equal to ... 4 Give... | |
 | George Albert Wentworth - Geometry, Solid - 1902 - 246 pages
...PROPOSITION XVIII. THEOREM. 551. If two planes are perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is perpendicular to the other plane. Let the plane PQ be perpendicular to MN, and let CD be drawn in PQ perpendicular to AB, the... | |
 | Education - 1902 - 880 pages
...excess of a triangle. 2 Prove that if two planes are perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is perpendicular to the other plane. 3 Complete and demonstrate the following: the lateral area •of a prism is equal to ... 4 Give... | |
 | George Albert Wentworth - Geometry - 1904 - 496 pages
...PROPOSITION XVIII. THEOREM. 551. If two planes are perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is perpendicular to the other plane. Let the plane PQ be perpendicular to MN, and let CD be drawn in PQ perpendicular to AB, the... | |
 | Isaac Newton Failor - Geometry - 1906 - 431 pages
...PROPOSITION XVIII. THEOREM 564 If two planes are perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is perpendicular to the other. HYPOTHESIS. SQ is the intersection of the perpendicular planes MN and PQ, and AB in PQ is JL to SQ... | |
 | Isaac Newton Failor - Geometry - 1906 - 440 pages
...PROPOSITION XVIII. THEOREM 564 If two planes are perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is perpendicular to the other. p/A HYPOTHESIS. SQ is the intersection of the perpendicular planes MN and PQ, and AB in PQ is -L to... | |
 | Webster Wells - Geometry - 1908 - 336 pages
...one. PROP. XXIII. THEOREM 387. If two planes are perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is 'perpendicular to the other. Given planes PQ and MN -L, intersecting in line QB, and linn AB in plane PQ JL QR. To Prove AB J- MN.... | |
 | Webster Wells - 1909 - 154 pages
...cutting .BG' at If.' Then GH1. QR. (If two planes are perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is perpendicular to the other.) § 387. 2. Then plane DGHA _L EF. (All the perpendiculars to a straight line at a given point lie in... | |
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