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Books Books 11 - 20 of 25 on AE is a parallelogram : join AH, DF ; and because AB is parallel to DC, and BH to....  
" AE is a parallelogram : join AH, DF ; and because AB is parallel to DC, and BH to CF ; the two straight lines AB, BH, which meet one another, are parallel to DC and CF, which meet one another... "
Books 10-13 and appendix - Page 324
by Euclid, Sir Thomas Little Heath, Johan Ludvig Heiberg - 1908
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, John Davidson - Mathematics - 1835 - 513 pages
...each of the figures CE, FG, GB, BF, AE is a parallelogram: Join AH, DF; and because AB is parallei to DC, and BH to CF, the two straight lines AB, BH, which meet one another, are parallel to DC and CF, which meet one another, and are not in the same plane with the other two; wherefore they...
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Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - Trigonometry - 1837 - 318 pages
...be proved that each of the figures CE, FG, GB, BE, AE is a parallelogram ; join AH, DF ; and because AB is parallel to DC, and BH to CF ; the two straight,...lines AB, BH, which meet one another, are parallel to DC and CF, which meet one another ; wherefore, though the first two are not in the same plane with...
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Solid and spherical geometry and conic sections: being a treatise on the ...

A. Bell, Robert Chambers, William Chambers - Geometry - 1837 - 164 pages
...proved that each of the figures CE, FG, GB, BF, AE, is ac/_./ parallelogram. Join AH, DF ; and because AB is parallel to DC, and BH to CF ; the two straight...lines AB, BH, which meet one another, are parallel to DC and CF, which meet one another ; wherefore, though the first two are not in the same plane with...
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Solid and spherical geometry and conic sections: being a treatise on the ...

A. Bell, Robert Chambers, William Chambers - Conic sections - 1837 - 164 pages
...parallelogram. Join AH, DF ; and be- V7 ,„-••'" ''\ cause AB is parallel to DC, and BH to TJ _ CF ; the two straight lines AB, BH, which meet one another, are parallel to DC and CF, which meet one another ; •wherefore, though the first two are not in the same plane •with...
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The Elements of Euclid; viz. the first six books,together with the eleventh ...

Euclides - 1841
...be proved that each of the figures CE, FG, GB, BF, AE is a parallelogram. Join AH, DF; and because AB is parallel to DC, and BH to CF; the two straight lines AB, BH, which meet one another, D '* are parallel to DC and CF which meet one another, and are not in the same plane with the other...
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Elements of geometry: containing the first six books of Euclid, with a ...

John Playfair - Mathematics - 1842 - 317 pages
...be proved that each of the figures CE, FG, GB, BE, AE is a parallelogram ; join AH, DF ; and because AB is parallel to DC, and BH to CF ; the two straight...lines AB, BH, which meet one another, are parallel to DC and CF, which meet one another ; wherefore, though the first two are not in the same plane with...
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Euclid's Elements of geometry [book 1-6, 11,12] with explanatory notes ...

Euclides - 1845
...be proved, that each of the figures CE, FG, GB, BF, AE is a. parallelogram. Join AH,DF; And because AB is parallel to DC, and BH to CF ; the two straight...lines AB, BH, which meet one another, are parallel to DC and CF, which meet one another, and are not in the same plane with the other two: wherefore they...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

Euclid, John Playfair - Euclid's Elements - 1846 - 317 pages
...be proved that each of the figures CE, FG, GB, BE, AE is a parallelogram ; join AH, DF ; and because AB is parallel to DC, and BH to CF ; the two straight...lines AB, BH, which meet one another, are parallel to DC and CF, which meet one another ; wherefore, though the first two are not in the same plane with...
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An elementary course of mathematics

Samuel Hunter Christie - 1847
...CE; FB, AE: its opposite planes shall be similar and equal parallelograms. Join AH, DF; and because AB is parallel to DC, and BH to CF, the two straight...lines AB, BH, which meet one another, are parallel to DC and CF, which meet one another: wherefore they contain equal angles (Prop. 20); therefore the angle...
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The Elements of geometry; or, The first six books, with the eleventh and ...

Euclides - 1855
...parallelogram. Join AH and D F. Because AB is parallel to D С, and BH to С F ; the two straight lines AB and BH, which meet one another, are parallel to the two straight lines D С and С F, which meet one another, and are not in the same plane with the other two. Therefore...
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