Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Books Books
" 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 361
by William Betz, Harrison Emmett Webb - 1916 - 178 pages
Full view - About this book

The Normal Elementary Geometry: Embracing a Brief Treatise on Mensuration ...

Edward Brooks - Geometry - 1868 - 284 pages
...line is perpendicular to that plane. 3. If two planes are perpendicular to each other, a line drawn in one of them perpendicular to their intersection is perpendicular to the other. 4. If two planes which cut each other are both perpendicular to a third plane, their intersection is...
Full view - About this book

A Treatise on Elementary Geometry: With Appendices Containing a Collection ...

William Chauvenet - Geometry - 1871 - 380 pages
...PROPOSITION XVIII.— THEOREM. 49. 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. Let the planes PQ and MN be perpendicular to each other ; at any point B of their intersection BQ,...
Full view - About this book

A Treatise on Elementary Geometry: With Appendices Containing a Collection ...

William Chauvenet - Geometry - 1872 - 382 pages
...PROPOSITION XVIII— THEOREM. 49. 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. Let the planes PQ and MN be perpendicular to each other; and at any point B of their intersection BQ,...
Full view - About this book

Annual Statement, Volumes 11-20

1876 - 646 pages
...decagon in a given circle. 3. 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. 4. Define a polyhedron and a prism. The sections of a prism made by parallel planes are equal polygons....
Full view - About this book

Manual of Geometry and Conic Sections: With Applications to Trigonometry and ...

William Guy Peck - Conic sections - 1876 - 376 pages
...Cor. 1. Because QD is perpendicular to both QA and QP, it is perpendicular to their plane MN, that is, if two planes are perpendicular to each other, a line in one plane perpendicular to their intersection is perpendicular to the other plane. Cor. 2. If three lines...
Full view - About this book

Elements of Plane and Solid Geometry

George Albert Wentworth - Geometry - 1877 - 416 pages
...PROPOSITION XVII. THEOREM. 473. If two planes be perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is perpendicular to the other plane. / the planes MN and PQ be perpendicular to each other, and at any point B of their intersection...
Full view - About this book

Elements of Geometry: And the First Principles of Modern Geometry

William Henry Harrison Phillips - Geometry - 1878 - 236 pages
...plane of any line, and its projection upon a plane (6), is perpendicular to that plane. XV. Theorem. If two planes are perpendicular to each other, a line...their intersection is perpendicular to the other. HYPOTH. ACD_LMN, and AB_L CD, their intersection. To BE PROVED. AB _L MN. BOOK V.] PLANES WHICH CUT...
Full view - About this book

The Eclectic School Geometry: A Revision of Evan's School Geometry

Evan Wilhelm Evans - Geometry - 1884 - 170 pages
...any plane passed through PC. THEOREM VIII. If two planes are perpendicular to each other, a straight line in one of them, perpendicular to their intersection, is perpendicular to the other. The planes HS and MN are perpendicular to each other. AB is a straight line in HS perpendicular to...
Full view - About this book

The Elements of Geometry

Webster Wells - Geometry - 1886 - 392 pages
...PROPOSITION XIV. THEOREM. 468. If tivo planes are perpendicular to each other, a straight line draicn in one of them perpendicular to their intersection is perpendicular to the other. Let the plane PQ be perpendicular to MN. Let QR be their intersection, and draw AB in the plane PQ...
Full view - About this book

Chauvenet's Treatise on Elementary Geometry

William Chauvenet, William Elwood Byerly - Geometry - 1887 - 331 pages
...PROPOSITION XV.—THEOREM. 36, 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. Let the planes PQ and MN be perpendicular to each other; and at any point B of their intersection BQ...
Full view - About this book




  1. My library
  2. Help
  3. Advanced Book Search
  4. Download EPUB
  5. Download PDF