 | Raleigh Schorling, William David Reeve - 1922 - 460 σελίδες
...drawn _L CD in the plane ir is _L IT and that it is the only perpendicular. 284. Corollary 3. A plane perpendicular to one of two parallel planes is perpendicular to the other plane. EXERCISES 1. The sum of two adjacent dihedral angles formed by two intersecting planes is 180°.... | |
 | Arthur Schultze, Frank Louis Sevenoak - 1913 - 484 σελίδες
...line AB. To prove MN II PQ. HINT. Apply the indirect method and (603). PROPOSITION XIV. THEOREM 515. A straight line perpendicular to one of two parallel planes is perpendicular to the other also. Proof. Through AB pass any plane intersecting MN in AC and PC in BD, respectively. AC II BD, (483)... | |
 | David Eugene Smith - 1924 - 256 σελίδες
...to n, and hence m and n cannot meet. /. ABis II to CD. Given §3,9 Given §36 §9,1 56. Corollary. A line perpendicular to one of two parallel planes is perpendicular to the other also. Let PQ be _L to m, and let p and q be two planes containing PQ. Now prove (§ 55) that QB is II to... | |
 | Gardner Chace Anthony, George Francis Ashley - 1926 - 266 σελίδες
...straight line is parallel to two intersecting planes, it is parallel to their line of intersection. 5. A straight line perpendicular to one of two parallel planes is perpendicular to the other also. 6. Only one common perpendicular can be drawn between two lines not in the same plane. to a plane,... | |
 | National Committee on Mathematical Requirements - 1927 - 208 σελίδες
...parallel to each of two skew lines, or else parallel to one line and containing the other. [15, cd] A line perpendicular to one of two parallel planes is perpendicular to the other also. [18, cd] Through a given point outside a plane one plane, and only one, can be passed parallel to the... | |
 | 1930 - 18 σελίδες
[ Λυπούμαστε, το περιεχόμενο αυτής της σελίδας είναι περιορισμένο ] | |
 | Denning Duer Miller - 1942 - 648 σελίδες
[ Λυπούμαστε, το περιεχόμενο αυτής της σελίδας είναι περιορισμένο ] | |
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A straight line perpendicular to one of two parallel planes is perpendicular to the other also. 
