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Bøker Bok 110 av 56To draw a straight line perpendicular to a plane, from a given point above it. Let...
" To draw a straight line perpendicular to a plane, from a given point above it. Let A be the given point above the plane BH ; it is required to draw from the point A a straight line perpendicular to the plane BH. "
Calendar - Side 290
av University of St. Andrews - 1896
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - 1806 - 518 sider
...1. angle ABC is equal a to the angle DEF. straight lines, &c. QED Therefore, if two PROP. XI. PROB. TO draw a straight line perpendicular to a plane, from a given point above it. 9 Let A be the given point above the plane BH ; it is required to draw from the point A a...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1806 - 311 sider
...c 8. 1. ABC is equal0 to the angle DEF. Therefore, if two straight lines, &c. QED l PROP. X. PROB. TO draw a straight line perpendicular to a plane, from, a given point above it. Let A be the givep" point above the plane BH ; it is re- Book II. quired to draw from the...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 528 sider
...the angle ABC is equal3 to the angle DEF. Therefore, if two straight lines, &c. QED PROP. XI. PROB. To draw a straight line perpendicular to a plane, from a given point above it. Let A be the given point above the plane BH ; it is required to draw from the point A a straight...
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Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - 317 sider
...angle ABC is equal (8. 1.) to the angle DEF. Therefore, if two straight lines, &c. Q, ED PROP. X. PROB. To draw a straight line perpendicular to a plane, from a given point above it. Let A be the given point above the plane BH ; it is required to draw from the poin,t A a...
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The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ...

Robert Simson - 1827 - 513 sider
...Therefore, if two straight lines, &c. QED D • 9. 11. • 1 Ax. 1. •33.1. *8. 1. PROP. XI. PROB. To draw a straight line perpendicular to a plane, from a given point above it. Let A be the given point above the plane BH ; it is required to draw from the point A a straight...
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Elements of geometry: Being chiefly a selection from Playfair's geometry

John Playfair - 1829 - 186 sider
...the angle ABC is equal to DEF (8. 1). Therefore, if two straight &c. QE D, PROPOSITION X. PROBLEM, To draw a straight line perpendicular to a plane, from a given point above it» Let A be the zrrcffl pees: t±ip*» ~Sx siSsee BH : k 2$ i to draw Iron; tfae poses A 4...
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A Collection of Cambridge Mathematical Examination Papers: Papers in the ...

John Martin Frederick Wright - 1831
...two is a right angle. 2. In a given circle to inscribe a triangle equiangular to a given triangle. 3. To draw a straight line perpendicular to a plane from a given point above it. o 4. Shew that at any stage of the operation for finding the greatest common measure of two...
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The Elements of Euclid: viz. the first six books, together with the eleventh ...

Euclid, Robert Simson - 1835 - 513 sider
...equal d to the angle DEF. straight lines," &c. QED the base DF; the Therefore, if two PROP. XI. PROB. To draw a straight line perpendicular to a plane, from a given point above it. Let A be the given point above the plane BH; it is required to draw from the point A a straight...
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Dr. Brook Taylor's Principles of Linear Perspective, Or, The Art of ...

Brook Taylor - 1835 - 110 sider
...perpendicular to AVC. This follows from the llth Proposition, llth book of Euclid, where it is demonstrated how to draw a straight line perpendicular to a plane from a given point above it. Fig. 22. D THEOREM I. It is considered to be an acknowledged truth, that a line drawn from...
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Solid and spherical geometry and conic sections: being a treatise on the ...

A. Bell, Robert Chambers, William Chambers - 1837 - 164 sider
...AC to the base DF, the angle ABC is equal (PI. Ge. I. 8) to the angle DEF. PROPOSITION X. THEOREM. To draw a straight line perpendicular to a plane, from a given point above it. Let A be the given point above the plane BH ; it is required to draw from the point A a straight...
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