| Euclides - 1853 - 176 páginas
...therefore a С is greater than a b. Wherefore the greater angle, &c. QED PROPOSITION XX. — THEOREM. **Any two sides of a triangle are together greater than the third side. LET** ab С be a triangle ; any two sides of it together are greater than the third side, viz. the sides... | |
| Royal Military Academy, Woolwich - 1853
...AB ; therefore AC is greater than AB. "Wherefore the greater angle, etc. QED PROPOSITION XX. THEOB. **Any two sides of a triangle are together greater than the third side.** Produce BA to the point D, and make (3. i.) AD equal to AC, and join DC. Because DA is equal to AC,... | |
| sir George Ramsay (9th bart.) - 1853 - 282 páginas
...14. Alexander conquered Darius. 15. The three angles of a triangle are equal to two right lines. 16. **Any two sides of a triangle are together greater than the third side.** 17. The French Convention treated Louis XVI. cruelly. 18. The Chamber of Peers condemned Ney to death... | |
| Euclides - 1853 - 146 páginas
...the point A. B For, if not, let it fall otherwise, if possible, as FGDH, and join AF, AG. And because **two sides of a triangle are together greater than the third side,** (1. 20.) 1. AG, 6F, are greater than FA; but FA is equal (I. Def. 15.) to FH, both being from the same... | |
| Popular educator - 1854 - 1274 páginas
...D. Therefore, if from a point without a given straight line, &c. QE.D. PROPOSITION XX.— THEOREM. **Any two sides of a triangle are together greater than the third side.** In fig. 20, let ABO be a triangle; MI. SO. any two of its sides are together greater than the third... | |
| John Cumming - 1854 - 496 páginas
...are not equally important. Two and two are four, is a truth ; the sun rises and sets, is a truth ; **any two sides of a triangle are together greater than the third side,** is a truth ; the square of the hypothenuse of a right-angled triangle is equal to the sum of the squares... | |
| John Playfair - 1855 - 340 páginas
...has been shewn that it is not equal to AB ; therefore AC is greater than AB. — — PROP. XX. THEOR. **Any two sides of a triangle are together greater than...Let ABC be a triangle ; any two sides of it together** arc greater than the third side, viz. the sides BA, AC greater than the side BC ; and AB, BC greater... | |
| Euclides - 1855 - 270 páginas
...be drawn to the given straight line, one upon , each side of the shortest line. : PROP. XX. THEOREM. **Any two sides of a triangle are together greater than the third side. Let ABC be a triangle : any two** of its sides are together greater than the third side ; viz., the sides BA, AC, are greater than the... | |
| J. Butler Williams - 1855 - 306 páginas
...the true length : this follows from Euclid's 20th proposition of the first book, which proves that **any two sides of a triangle are together greater than the third.** Also, the frequent repetition of errors in the coincidence of the extremities of the chain with the... | |
| Thomas Reid - 1855 - 528 páginas
...this proposition, — Any two sides of a triangle are together equal to the third, — as of this, — **Any two sides of a triangle are together greater than the third;** yet the first of these is impossible. Perhaps it will be said, that, though you understand the meaning... | |
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