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A plane is perpendicular to a plane, when the straight lines drawn in one of the planes perpendicular to the common section of the two planes, are perpendicular to the other plane. 5. The inclination of a straight line to a plane...
An elementary course of mathematics - Page 1
by Samuel Hunter Christie - 1847

## The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1762 - 488 pages
...the acute angle contained by that ftraight line, and another drawn from the point in which the firft line meets the plane, to the point in which a perpendicular to the plane drawn from any point of the firft line above the plane, meets the fame plane. VI. The inclination of a plane to a plane is the...

## The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1781 - 534 pages
...contained by that ftraight line, and another drawn from the point in which the firfl line meets the phne, to the point in which a perpendicular to the plane drawn from any point of the firfl line above the plane, meets the fame plane. VI. The inclination of a plane to a plane is the...

## The First Six Books: Together with the Eleventh and Twelfth

Euclid - 1781 - 552 pages
...the acute angle contained by that ftraight line, and another drawn from the point in which the fir ft line meets the plane, to the point in which a perpendicular to the plane drawn fipm any point of the iii ft line above the plane, meets the fame plane. VI. The inclination of a plane...

## The Elements of Euclid: Viz. the First Six Books, with the Eleventh and ...

Alexander Ingram - Trigonometry - 1799 - 374 pages
...the acute angla contained by that ftraight line, and another drawn from the point in which the fiift line meets the plane, to the point in which a perpendicular to the plane drawn from any point of the firft line above the plane, meets the fame plane. VI. See N. The inclination of a plane to a plane...

## Elements of Geometry;: Containing the First Six Books of Euclid, with a ...

John Playfair, Euclid - Circle-squaring - 1804 - 468 pages
...contained by that ftraight line, and another drawn from the Supplement the point in which the firft line meets the plane, to the point in which, a perpendicular to the plane, drawn from any point of the firft line, meets the fame plane. IV. The angle made by two pjanes which cui one another, is the angle...

## The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - Trigonometry - 1804 - 530 pages
...the acute angle contained by that ftraight line, and another drawn from the point in which the firft line meets the plane, to the point in which a perpendicular to the plane drawn from any point of the firft line above the plane, meets the fame plane. VI. The inclination of a plane to a plane is the...

## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Mathematics - 1806 - 320 pages
...perpendicular to the common section of the two planes are perpendicular to the other plane. I III. f The inclination of a straight line to a plane is the acute angle contained by that line and another straight line drawn from the point in which the first line meets the plane to the...

## Pantologia. A new (cabinet) cyclopędia, by J.M. Good, O. Gregory ..., Volume 5

John Mason Good - 1813 - 714 pages
...planes perpendicularly to the common section of the two planes, arc perpendicular to the other plane. 5. The inclination of a straight line to a plane is the...perpendicular to the plane drawn from any point of the lirst line above the plane, meets the same plane. 6. The inclination of a plane to a plane is the acute...