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" Now let BD be to DC, as BA to AC, and join AD ; the angle CAD is equal to the angle DAE. The same construction being made, because BD is to DC as BA to AC ; and also BD to DC, BA to AF (2. "
Manual of Euclid. Books IV. V. VI. - Page 71
by Euclid - 1859
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Euclid's Elements of geometry [book 1-6, 11,12] with explanatory notes ...

Euclides - 1845 - 546 pages
...7-) Next, let BD be to DC, as BA to AC, and join AD. The angle CA D shall be equal to the angle DAE. The same construction being made, because BD is to DC, as BA to AC; and that BD is also to DC, as BA to AF; (vi. 2.) therefore BA is to AC, as BA to ^F: (v. 11.)...
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The Elements of Euclid, the parts read in the University of Cambridge [book ...

Euclides - 1846 - 292 pages
...AC. Next, let BD be to DC as BA to AC, and join AD : then the angle CAE shall be bisected by AD. For, the same construction being made, because BD is to DC as BA to AC, and also BD is to DC as BA to AF, therefore BA is to AC as BA to AF, and therefore AC is equal...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

Euclid, John Playfair - Euclid's Elements - 1846 - 334 pages
...BA to AC. Now let BD be to DC, as BA to AC, and join AD ; the angle CAD is equal to the angle DAE. The same construction being made, because BD is to DC as BA to AC ; and also BD to DC, BA to AF (2. 6. ) ; therefore BA is to AC, as BA to AF (11. 5.), wherefore...
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The first six books of the Elements of Euclid, with numerous exercises

Euclides - Geometry - 1853 - 176 pages
...ba to ac. Let now bd be to dc as ba to ac, and join ad ; the angle cad is equal to the angle da e. The same construction being made, because bd is to dc as ba to ac ', and that bd is also to dc, as ba to af (vi. 2) ; therefore ba is to a C "s ba to af (v. 1...
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The geometry, by T. S. Davies. Conic sections, by Stephen Fenwick

Royal Military Academy, Woolwich - Mathematics - 1853 - 400 pages
...(2. vi.) : Let now BD be to DC, as BA to AC, and join AD ; the angle CAD is equal to the angle DAE. The same construction being made ; because BD is to DC, as BA to AC : and that BD is also to DC, as BA to AF (2. vi.) ; therefore BA is to AC, as BA to AF (11. v.)...
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The Elements of geometry; or, The first six books, with the eleventh and ...

Euclides - 1855 - 270 pages
...side BA is to the side AC ; and let AD be joined. The angle BAC is bisected by the straight line A D. The same construction being made ; because BD is to...to DC, as BA is to AE, because AD is parallel to EC (VI. 2). Therefore BA is to AC, as BA is to AE (V. 11), and AC is equal to AE (V. 9). Because the angle...
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The Elements of Euclid, with many additional propositions, and explanatory ...

Euclides - 1855 - 230 pages
...BD be to DC, as BA is to AC, and join AD ; then the angle CAD is equal to the angle DAE. The saine construction being made, because BD is to DC, as BA is to AC ; and also BD to DC, as BA is to AF (e); therefore BA is to AC, as BA is to AF (/); wherefore AC is equal...
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The Elements of Euclid with Many Additional Propositions and Explanatory Notes

Eucleides - 1860 - 396 pages
...[2.] Next let BD be to DC, as BA is to AC, and join AD ; then the angle CAD is equal to the angle DAE. The same construction being made, because BD is to DC, as BA is to AC ; and also BD to DC, as BA is to AF (e) ; therefore BA is to AC, as BA is to AF (/) ; wherefore AC is equal...
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Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - Geometry, Plane - 1860 - 380 pages
...7.) Next, let BD be to DC, as BA to AC, and join AD. The angle CA D, shall be equal to the angle DAE. The same construction being made, because BD is to DC, as BA to AC; and that BD is also to DC, as BA to AF; (vi. 2.) therefore BA is to AC, as Syf to AF: (v. 11.)...
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The elements of plane geometry; or, The first six books of Euclid, ed. by W ...

Euclides - 1863 - 122 pages
...the exterior angle BAD is equal to the interior ^ _ , and opposite angle AEC (I. 29). But the a DC The same construction being made, because BD is to DC as BA is lV™ n 9^ 1St ? DC n a ? ?A»to AE.becaw, AD is parallel to A ^ ^ 2 ) ' theKfore BA is to AC as BA...
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