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Again, because the angle at B is half a right angle, and FDB a right angle, for it is equal...
Elements of Geometry: Containing the First Six Books of Euclid with a ... - Strona 55
autor: John Playfair - 1855 - Liczba stron: 318
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## The Elements of Euclid, containing the first six books, with a selection of ...

Euclides - 1874
...opposite angle ECB (I. 29), therefore the remaining angle BFD is half a right angle ; wherefore 7. The angle at B is equal to the angle BFD, and the side DF is equal to the side DB (I. 6). And because AC is equal to CE, the square on AC is equal to the square...
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## Elements of geometry, based on Euclid, books i-iii

Edward Atkins - 1876 - Liczba stron: 119
...angle FDB a right angle, for it is equal to the interior and opposite angle ECB (I. 29), Therefore the remaining angle BFD is half a right angle ; Therefore...angle at B is equal to the angle BFD, and the side DF is equal to the side DB (I. 6). And because AC is equal to CE (Const.), the square on AC is equal to...
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## Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1876 - Liczba stron: 403
...and opposite angle ECB, (l. 29.) therefore the remaining angle BFD is half a right angle ; wherefore the angle at B is equal to the angle BFD, and the side DF equal to the side DB. (1.6.) And because AC is equal to CE, the square on AC in equal to the square...
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## The Elements of Euclid for the Use of Schools and Colleges: With Notes, an ...

Isaac Todhunter - 1880 - Liczba stron: 400
...angle FDB a right angle, for it is equal to the interior and opposite angle ECU ; .. [I. 29. therefore the remaining angle BFD is half a right angle. Therefore...angle at B is equal to the angle BFD, and the side DF is equal to the side DB. [I. 6. And because AC is equal to CE, [Construction. the square on AC is equal...
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## The Elements of Euclid for the Use of Schools and Colleges: Comprising the ...

Euclid, Isaac Todhunter - 1883 - Liczba stron: 400
...angle FDB a right angle, for it is equal to the interior tod apposite angle EOB ; [I. 29. therefore the remaining angle BFD is half a right angle. Therefore...angle at B is equal to the angle BFD, and the side DF is equal to the side DB. [1.6. And because AC is equal to CE, [Construction. the square on .4 C' is...
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