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" To draw a straight line at right angles to a given straight line, from a given point in the same. "
Euclid - Page 26
by Euclid, Rupert Deakin - 1903 - 164 pages
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The Elements of Euclid for the Use of Schools and Colleges: Comprising the ...

Euclid, Isaac Todhunter - Euclid's Elements - 1867 - 424 pages
...Wherefore the given straight line AB it divided into two equal parts at the point DQEF PROPOSITION 11. PROBLEM. To draw a straight line at right angles to a given itraight line, from a given point in the same. Let AB be the given straight line, and C the given point...
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Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1868 - 434 pages
...triangles A CD, BCD; the two sides AC, CD are equal to the two BC, CD, each to each ; PROPOSITION XI. PROBLEM. To draw a straight line at right angles to a given straight line, from a given point in the tame. Let AB be the given straight line, and Ca given point in it. It is required to draw a straight...
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Mensuration for Beginners: With Numerous Examples

Isaac Todhunter - Measurement - 1869 - 312 pages
...take care that the end of the string is properly placed at E. 401. To determine the situation of the straight line at right angles to a given straight line from a given point in it. Let AB be the given straight line, and F the given point in it. Take D and E points in AB, so that...
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Elements of geometry, containing the first two (third and fourth ..., Part 1

Euclides - 1871 - 136 pages
...may be one-third of the line, which is made up of the whole and the part produced. PROPOSITION XI. PROBLEM. To draw a straight line at right angles to...given straight line from a given point in the same. A. -D 0 X JJ Let AB be the given st. line, and C a given pt. in it. It is required to draw from C a...
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Elements of geometry, containing books i. to vi.and portions of books xi ...

Euclides, James Hamblin Smith - Geometry - 1872 - 376 pages
...may be one.third of the line, which is made up of the whole and the part produced. PROPOSITION XI. PROBLEM. To draw a straight line at right angles to...from a given point in the same. Let AB be the given st. line, and Ca. given pt. in it. It is required to draw from C a st. line _L to AB. Take any pt....
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The first and second books of Euclid explained to beginners, by C.P. Mason

Euclid, Charles Peter Mason - Geometry - 1872 - 216 pages
...therefore, be equal to it. In other words, AB has been divided at D into two equal parts. PBOPOSITION XI. To draw a straight line at right angles * to a given straight line from a given point in the same. To make the construction we must be able, — 1. To join two given points by a straight line. (Post....
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The Acting Teacher's and Student's in Training Guide and Text Book for ...

Henry Major - Student teachers - 1873 - 580 pages
...AD is equal to DB, and the straight line AB is divided into two equal parts in the point D. XI. — To draw a straight line at right angles to a given...the same. Let AB be the given straight line, and C a point given in it ; it is required to draw a straight line from the point C at right angles to AB....
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Elementary Mathematics: Embracing Arithmetic Geometry, and Algebra

Lewis Sergeant - 1873 - 182 pages
...AC, CD = BC, CD, and the angles included are equal. Therefore AD = DB (Prop. 2). Proposition 7.— Problem. To draw a straight line at right angles to a given straight line (AB), from a given point in it (C). CONSTRUCTION. — In AB take CD and CE equal. With centres D and...
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Pure mathematics, Volume 1

Edward Atkins - 1874 - 426 pages
...(I. 4). Therefore the straight line AB is divided into two equal parts in the point DQEF Proposition 11. — Problem. To draw a straight line at right...the same. Let AB be the given straight line, and C a given point in it. It is required to draw a straight line from the point C at right angles to AB....
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A School Euclid. Being Books I.&II. of Euclid's Elements. With Notes ...

Euclides - 1874 - 120 pages
...bisects the vertical angle of an isosceles triangle also bisects the base at right angles. PROPOSITION 11. PROBLEM. To draw a straight line at right angles...straight line, from a given point in the same. * Let AB bo ' • the given straight line, and C the given point in it. It is required to draw a straight line...
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