 | Andrew Bell - 1837 - 290 Seiten
...angle ABC to the angle DEF, and the angle ACB to the angle DFE. PHOPOSITION V. THEOREM. The angles at the base of an isosceles triangle are equal to...produced, the angles upon the other side of the base shall also be equal. Let ABC be an isosceles triangle, of which the side AB is equal to AC, and let the straight... | |
 | Euclid, James Thomson - 1837 - 410 Seiten
...figure to be applied to another, it is said to be proved by the method of superporition. THE angles at the base of an isosceles triangle are equal to...produced, the angles upon the other side of the base are also equal.* Let ABC be an isosceles triangle, of which the side AB is equal to AC, and let the... | |
 | Euclides - 1837 - 112 Seiten
...directions in Euclid. PROPOSITION V. Theorem. The angles at the base of an isosceles triangle are equal ; and if the equal sides be produced, the angles upon the other side of the base shall be equal. Steps of the Demonstration. f base BG = base CF 1. Prove that in A AGB< Z ABG= Z ACF }of A AFC, 9.... | |
 | John Playfair - 1837 - 332 Seiten
...to which the equal sides are opposite, shall be equal, each to each. V PROP. V. THEOR. f The angles at the base of an Isosceles triangle are equal to one another ; and if the equal sides be produced, tfa angles upon the other side of the base shall be equal. Let ABC be an isosceles triangle, of which... | |
 | Edward Tagart - 1837 - 156 Seiten
...and doubtless I am, that there lived a celebrated orator named Cicero, at Rome, as that the angles at the base of an isosceles triangle are equal to one another ; but it is evident that the ideas associated with the words Cicero, celebrity, oratory, Rome, are... | |
 | George Augustus Addison - 1837 - 372 Seiten
...thirty-second, therefore, a person must be able to demonstrate the fifth, or to prove that the angles at the base of an isosceles triangle are equal to one another, &c. — and yet how many have we known who have forfeited their claims to manhood, by not being able... | |
 | Euclides - 1838 - 264 Seiten
...are opposite shall be equal, each to each. Which was to be demonstrated. PROP. V. THEOR. The angles at the base of an isosceles triangle are equal to...be an isosceles triangle, of which the side AB is equal to AC, and let the straight lines AB, AC be produced to D and E : the angle ABC shall be equal... | |
 | Robert Simson - 1838 - 434 Seiten
...are opposite shall be equal, each to each. Which was to be demonstrated. PROP. V. THEOR. THE angles at the base of an isosceles triangle are equal to...be an isosceles triangle, of which the side AB is equal to AC, and let the straight lines AB, AC be produced to D and E. the angle ABC shall be equal... | |
 | Olinthus Gregory - 1840 - 204 Seiten
...need not have been placed here. (c.) In the demonstration of prop. 15, let the words, " the angles at the base of an isosceles triangle are equal to one another ; and," be omitted ; they are superfluous. ing my views as to the best method of teaching the doctrine of proportion.... | |
 | Euclides - 1841 - 378 Seiten
...are opposite, shall be equal, each to each. Which was to be demonstrated. PROP. V. THEOR. The angles at the base of an isosceles triangle are equal to...be an isosceles triangle, of which the side AB is equal to AC, and let the straight lines AB, AC, be produced to D and E: the angle ABC shall be equal... | |
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THE angles at the base of an isosceles triangle are equal to one another : and, if the equal sides be produced, the angles upon the other side of the base shall be equal. 
