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" 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, which are the angles upon the other side of the base. Therefore, " the... "
Elements of geometry: consisting of the first four,and the sixth, books of ... - Page 11
by Euclides - 1842
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The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1762 - 488 pages
...which are the angles at the bafe of the triangle ABC. and it has alfo been proved that the angle FBC is equal to the angle GCB, which are the angles upon the other fide of the bafe. Therefore the angles at the bafe, &c. Q^ED COROLLARY. Hence every equilateral triangle...
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The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ...

Robert Simson - Trigonometry - 1775 - 534 pages
...which are the angles at the bafe of the triangle ABC : And it has alfo been proved that the angle FBC is equal to the angle GCB, which are the angles upon the other fide of the bafe. Therefore the angles at the bafe, &c. QED CoRoLLARY. Hence every equilateral triangle...
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Elements of Geometry;: Containing the First Six Books of Euclid, with Two ...

Euclid, John Playfair - Euclid's Elements - 1795 - 462 pages
...which are the angles at the bafe of the triangle ABC : And it has alfo been proved that the angle FBC is equal to the angle GCB, which are the angles upon the other fide of the bafe. Therefore the angles at the bafe, &E.C. Q..ED CoRoLLARY. Hence everj equilateral...
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The Elements of Euclid: Viz. the First Six Books, with the Eleventh and ...

Alexander Ingram - Trigonometry - 1799 - 374 pages
...•which are the angles at the bafe of the triangle ABC : And it has alfo been proved, that the angle FBC is equal to the angle GCB, which are the angles upon the other fide of the bafe. Therefore the angles at the bafe, Sec. QED COROLLARY. Hence every equilateral triangle...
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The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - Trigonometry - 1804 - 530 pages
...which are the angles at the bafe of the triangle ABC. and it has alfo been proved that the angle FBC is equal to the angle GCB, which are the angles upon the other fide of the bafe. Therefore the angles at the bafe, &c. .Q._E. D. . CoRoLLARY. Hence every equilateral...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Mathematics - 1806 - 320 pages
...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...COROLLARY. Hence every equilateral triangle is also equi* angular. . PROP. VI. THEOR. IF two angles of a triangle be equal to one another, the sides which...
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The Elements of Euclid; viz. the first six books, together with the eleventh ...

Euclides - 1814 - 560 pages
...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 base. Therefore the angles at the base, &c. QED In BD take any point F, and from AE the greater, cut • 3. i. off AG equal a to AF, the less, and...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 588 pages
...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...side of the base. Therefore the angles at the base, && QED COROLLAUY. Hence every equilateral triangle is also equiangular.' i' PROP. VI. THEOR. IF two...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Circle-squaring - 1819 - 350 pages
...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...of the base. Therefore, the angles at the base, &c. Q, ED COROLLA.RY. Hence every equilateral triangle is also equiangular. PROP. VI. THEOR. . , If two...
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Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - 354 pages
...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...side of the base. Therefore, the angles at the base, kc. QED COROLLARY. Hence every equilateral triangle is also equiangular.. PROP. VI. THEOR. If two angles...
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