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AB shall be at right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK ; take any point F in CE, from which draw FG in the plane DE at right D angles to CE ; and because AB is , perpendicular...
The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ... - Side 211
av Robert Simson - 1775 - 520 sider
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## Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1868 - 410 sider
...right angles to the plane CK. DGAH Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK; take any point F in CE, from...which draw FG in the plane DE at right angles to CE, (I. 11.) And because AB is perpendicular to the plane CK, therefore it is also perpendicular to every...
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## Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1876 - 403 sider
...DE pass through AB, and let CE be the common section of the planes DE, CA ; take any point F in CK from which draw FG in the plane DE at right angles to CE. (i. 11.) And because AB is perpendicular to the plane LJi, therefore it is also perpendicular to every...
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## The Elements of Euclid for the Use of Schools and Colleges: With Notes, an ...

Isaac Todhunter - 1880 - 400 sider
...CK. Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK; [XI. 3. take any point F in CE, from which draw FG, in the plane DE, at right angles to CE. [I. 11. Then, "because AB is at right angles to the plane [Hypothesis. therefore it makes right angles...
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## The Elements of Euclid for the Use of Schools and Colleges: Comprising the ...

Euclid, Isaac Todhunter - 1883 - 400 sider
...Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK; [XI. 3. Y take any point F in > CE, from which draw FG, in the plane DE, at right angles to CE. [1. 11. JThen, because AB is at night angles to the plane [Hypothesis. therefore it makes right angles...
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