The Elements of Geometry: Or, The First Six Books, with the Eleventh and Twelfth, of Euclid |
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Seite 15
E A For if the angle CBA be equal to the angle ABD , each of them is a right angle ( Def . 10 ) . But if the angles CBA , ABD , be unequal , from the point B draw BE at right angles ( I. 11 ) to CD . Therefore the angles CBE , EBD ( Def ...
E A For if the angle CBA be equal to the angle ABD , each of them is a right angle ( Def . 10 ) . But if the angles CBA , ABD , be unequal , from the point B draw BE at right angles ( I. 11 ) to CD . Therefore the angles CBE , EBD ( Def ...
Seite 27
Therefore also the three angles C A B , ABC , A CB are equal ( Ax . 1 ) to two right angles . Wherefore , if a side of any triangle be produced , & c . Q. E. D. COR . 1. - All the interior angles of any rectilineal figure together with ...
Therefore also the three angles C A B , ABC , A CB are equal ( Ax . 1 ) to two right angles . Wherefore , if a side of any triangle be produced , & c . Q. E. D. COR . 1. - All the interior angles of any rectilineal figure together with ...
Seite 76
76 EUCLID'S ELEMENTS . are together less than two right angles ( I. 17 ) , and BAC has been proved to be a right angle . Therefore ABC is less than a right angle . Wherefore the angle in a segment ABC greater than a semicircle is less ...
76 EUCLID'S ELEMENTS . are together less than two right angles ( I. 17 ) , and BAC has been proved to be a right angle . Therefore ABC is less than a right angle . Wherefore the angle in a segment ABC greater than a semicircle is less ...
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Bibliografische Informationen
| Titel | The Elements of Geometry: Or, The First Six Books, with the Eleventh and Twelfth, of Euclid Cassell's edition of Euclid Cassell's educational works |
| Autor/in | Euclid |
| Ausgabe | 82 |
| Verlag | Cassell, Petter, and Galpin, 1859 |
| Länge | 212 Seiten |
| Zitat exportieren | BiBTeX EndNote RefMan |