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Books Books 1 - 10 of 57 on a plane is at right angles to a plane, when the straight lines drawn, in one of the....  
" a plane is at right angles to a plane, when the straight lines drawn, in one of the planes, at right angles to the common section of the planes are at right angles to the remaining plane. "
The Thirteen Books of Euclid's Elements - Page 305
by Euclid, Johan Ludvig Heiberg - 1908
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The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - Trigonometry - 1804
...angles wife a right angle; therefore AB is parallel b to FG. and AB is at b. 2s. t, when the ftraight lines drawn in one of the planes, at right angles to the fame plane c . but one plane is at right angles to another plane cs it. Book XI. to their common feftion,...
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The Elements of Euclid: viz. the first six books, together with the eleventh ...

Euclid, Robert Simson - Euclid's Elements - 1806 - 518 pages
...makes right angles with every straight line meeting it in that plane. IV. A plane is perpendicular to a plane when the straight lines drawn in one of the planes perpendicularly to the common section of the two planes are perpendicular to the other plane. V. The...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - Geometry - 1810 - 518 pages
...it makes right angles with every straight line metiin it in that plane. IV. A plane is perpendicular to a plane, when the straight lines drawn in one of the planes perpendicularly to the common section of the two planes, are perpendicular to the other plane. V. Tire...
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The Elements of Euclid; viz. the first six books, together with the eleventh ...

Euclides - 1814
...makes right angles with every straight line meeting it in that plane. IV. A plane is perpendicular to a plane, when the straight lines drawn in one of the planes perpendicularly to the common section of the two planes are perpendicular to the other plane. V. The...
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Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - 317 pages
...makes right angles with every straight line which it meets in that plane. II. 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. III. The...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Trigonometry - 1819 - 333 pages
...right angles with every straight line which it meets in that plane. II. ? 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. HI. The...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - Mathematics, Greek - 1821 - 516 pages
...makes right angles with every straight line meeting it in that plane. IV. A plane is perpendicular to a plane, when the straight lines drawn in one of the planes perpendicularly to the common section of the two planes, are perpendicular to the other plane. The...
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A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - Mathematics - 1825 - 372 pages
...make! right angles with every straight line meeting it in that plane. IV. A plane is perpendicular to a plane, when the straight lines drawn in one of the planes perpendicularly to the common section of the two planes, are perpendicular to the other plane. V. The...
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Elements of geometry; containing the first six books of Euclid, with two ...

Euclides - 1826
...angles with every v< v**' straight line which it meets in that plane. II. 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. III. The...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Euclid's Elements - 1826 - 320 pages
...makes right angles with every straight line whieh it meets in that plane. n. A plane is perpendieular to a plane, when the straight lines drawn in one of the planes perpendieular to the eommon seetion of the two planes, are perpendieular to the other plane. III. The...
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