| Euclides - 1816 - 592 pages
...which the equal sides 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 one andther; and if the equal sides be produced, the angles upon the other side of the base••shall... | |
| Sir John Leslie - Geometry - 1817 - 456 pages
...2.) are equal, and the angle ACD or ACE is equal to BCD or BCE. Again, the inferior triangles ACE and **BCE, having the side AC equal to BC, CE common, and...the base AE is equal to BE. / PROP. VIII. THEOR. The** exterior angle of a triangle is greater than either of its interior opposite angles. The exterior angle... | |
| John Playfair - Circle-squaring - 1819 - 348 pages
...the equal sides 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 one another ; and if the equal sides be produced, the angles upon the other side of the base shall... | |
| Sir John Leslie - Geometry - 1820 - 488 pages
...angle being always acute; wherefore that single angle may serve to designate the triangle. PROP. X. **THEOR. The angles at the base of an isosceles triangle...isosceles triangle ABC are equal. For draw (I. 5.)** I51) bisecting the vertical angle ABC. Because, by hypothesis, BA is equal to BC, the side BD common... | |
| Robert Simson - Trigonometry - 1827 - 546 pages
...which the equal sides 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 one another ; and if f f1e equal sides be produced, the angles upon the otber side of the base shall... | |
| Euclid, Robert Simson - Geometry - 1829 - 548 pages
...the equal sides 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 one another: and, if the equal sides be produced, the angles upon the other side of the base shall... | |
| Euclid - 1835 - 540 pages
...the equal sides 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 one another ; and if the equal sides be produced, the angles upon the other side of the base shall... | |
| John Playfair - Geometry - 1836 - 148 pages
...to which the equal sides are opposite shall be equal, each to each. Which was to be proved. PROP. V. **THEOR. 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... | |
| Euclides - 1838 - 264 pages
...which the equal sides 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 one another; and if the equal sides be produced, the angles upon the other side of the base shall... | |
| Euclides - Geometry - 1841 - 378 pages
...the equal sides 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 one another; and if the equal sides be produced, the angles -upon the other side of the base shall... | |
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