 | Euclid - 1826 - 234 pages
...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 the angles which are at the base of isosceles triangles are equal to one... | |
 | Robert Simson - Trigonometry - 1827 - 546 pages
...the parts of which, the angles CBG, BCF are also equal; therefore the f 3 Ax. remaining angle ABC is equal -)- to the remaining angle ACB, which are the angles at the base of the triangle ABC : and it has also been proved that the angle FBC is equal to the angle GCB,... | |
 | John Playfair - Euclid's Elements - 1833 - 346 pages
...equal-to the remaining angle ACB, which are the angles at the base of the triangle ABC : And it has also been proved that the angle FBC is equal to the angle GCB, which are the angles tipon the other side of the base. Therefore, the" angles at the base, &c. QED COROLLARY. Hence every... | |
 | Euclid - 1835 - 540 pages
...ABG is equal to the whole ACF, the parts of which, the angles CBG, BCF are also equal; the remaining angle ABC is therefore equal to the remaining angle ACB, which are the angles at the base of the triangle ABC : And it has also been proved that the angle FBC is equal to the angle GCB,... | |
 | John Playfair - Geometry - 1836 - 148 pages
...equal to the whole angle ACF, the parts of which, the angles CBG, BCF are also equal ; the remaining angle ABC is therefore equal to the remaining angle ACB, which are the angles at the base of the triangle ABC ; and it has also been proved, that the angle FBC is equal to the angle GCB,... | |
 | Andrew Bell - Euclid's Elements - 1837 - 290 pages
...that the whole angle ABG is equal to the whole ACF, and the part CBG to the part BCF, the remaining angle ABC is therefore equal to the remaining angle- ACB, which are the angles at the base of the triangle ABC : And it has also been proved that the angle FBC is equal to the angle GCB,... | |
 | Euclides - 1838 - 264 pages
...to the remaining * angle ACB, which are the angles at the base of the triangle ABC: and it has also been proved that the angle FBC is equal to the angle GCB, which are the angles upon the other side of the base. Therefore the angles at the base, &c. QED COR. — Hence every equilateral triangle... | |
 | Robert Simson - Geometry - 1838 - 434 pages
...ABG is equal to the whole ACF, the parts of which, the angles CBG, BCF are also equal; the remaining angle ABC is therefore equal to the remaining angle ACB, which are the angles at the base of the triangle ABC : and it has also been proved that the angle FBC is equal to the angle GCB,... | |
 | Euclides - Geometry - 1841 - 378 pages
...to the remaining angle _ACB, which are the angles at the base of the triangle ABC: and it has also been proved that the angle FBC is equal to the angle GCB, which are the angles upon the other side of the base. Therefore the angles at the base, &c. QED COROLLARY. Hence every equilateral triangle... | |
 | John Playfair - Euclid's Elements - 1842 - 332 pages
...that the whole angle ABG is equal to the whole ACF, and the part CBG to the part BCF, the remaining angle ABC is therefore equal to the remaining angle ACB, which are the angles at the base of the triangle ABC : And it has also been proved that the angle FBC is equal to the angle GCB,... | |
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ABC: and it has also been proved that the angle FBC is equal to the angle GCB, which are the angles upon the other side of the base. Therefore the angles at the base, &c. 
