 CGB, and the remaining angles will be equal to the remaining angles respectively, namely those which the equal sides subtend; therefore the angle FBC is equal to the angle GCB, and the angle BCF to the angle CBG.  此零非彼O - Σελίδα 221των 洪萬生 - 2006 - 353 σελίδεςΠεριορισμένη προεπισκόπηση - Σχετικά με αυτό το βιβλίο
 | Euclid - 1826 - 234 σελίδες
...whole angle ACF, of which the angle CBG is equal the angle BCF ; the remaining angle ABC b will be equal to the remaining angle ACB : and they are at the base of the triangle ABC. But it has also been proved, that the angle FBC is equal to the angle GCB, which are under the base. Therefore... | |
 | John Playfair - 1829 - 210 σελίδες
...1.). Now, since it has been proved that the angle ABG is equal to ACF, and the part CBG to the part BCF, the remaining angle ABC is equal to the remaining angle ACB (3 Ax.). Therefore, the angles at the base &c. QLD* Otherwise. If the side AB be equal to AC, the angle... | |
 | Euclid - 1892 - 460 σελίδες
...the whole angle ACF, ancl that parts of these, namely the angles CBG, BCF, are also equal ; therefore the remaining angle ABC is equal to the remaining angle ACB ; and these are the angles at the base of the triangle ABC. Also it has been shewn that the angle FBC is... | |
 | Seymour Eaton - 1899 - 362 σελίδες
...whole angle ABG is equal to the whole angle ACF, and that the parts CBG and BCF are equal, therefore the remaining angle ABC is equal to the remaining angle ACB, and these are the angles at the base of the triangle ABC. Also, it has been shown that the angle FBC is... | |
 | Euclid - 1908 - 550 σελίδες
...subtend ; therefore the angle FBC is equal to the angle GCB, and the angle BCF to the angle CBG. 4° Accordingly, since the whole angle ABG was proved...remaining angle ABC is equal to the remaining angle ACB; 45 and they are at the base of the triangle ABC. But the angle FBC was also proved equal to the angle... | |
 | Euclid - 454 σελίδες
...subtend ; therefore the angle FBC is equal to the angle GCB, and the angle BCF to the angle CBG. 4° Accordingly, since the whole angle ABG was proved equal to the angle ACFt and in these the angle CBG is equal to the angle BCF, the remaining angle ABC is equal to the... | |
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