 | Robert Simson - Trigonometry - 1806 - 546 pages
...are opposite shall be equal, each to each. Which was to be demonstrated. PROP. V. T1IEOR. THE angles at the base of an isosceles triangle are equal to...; and, if the equal sides be produced, the angles upon the other side of the base shall be equal. Let ABC be an isosceles triangle, of which the side... | |
 | John Playfair - Mathematics - 1806 - 320 pages
...Which was to be demonstrated. PROP. V. THEOR. THE angles at the base of an isosceles triangle are N. equal to one another ; and, if the equal sides be., produced, the angles upon the other side of the base shall also be equal. Let ABC be an isosceles triangle, of which the... | |
 | Sir John Leslie - Geometry, Analytic - 1809 - 542 pages
...angle ACE equal to BCE, are (I. 3.) equal, and consequently the base AE is equal to BE. PROP VIII. THEOR. The angles at the base of an isosceles triangle are equal. The angles BAC and BCA at the base of the isosceles triangle ABC are equal. For draw (I. 5.) BD bisecting... | |
 | Euclid - Geometry - 1810 - 554 pages
...Which was to ^ be demonstrated. PROP. V. THEOR. THE angles at the base of an isosceles triangle arc equal to one another; and, if the equal sides be produced, the angles upon the other side of the base shall be equal. Let ABC be an isosceles triangle, of which the side... | |
 | John Mason Good - 1813 - 714 pages
...each, viz. those to which the equal sides are opposite. Prop. V. Theor. The angles at the base of ло 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. •Prop. VI. Tbeor. If two angles uf -a ti ian-1«**... | |
 | Euclides - 1814 - 560 pages
...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 be equal. Let ABC be an isosceles triangle, of which the Mile... | |
 | John Gummere - Surveying - 1814 - 398 pages
...the acute angles be subtracted from 90% the remainder will be the other acute angle. r 8. The angles at the base of an isosceles triangle are equal to one another. 9. If one side of a triangle be produced, the external angle will be equal to the sum of the two internal... | |
 | Euclides - 1816 - 588 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
...triangle can only have one right or obtuse angle, its two remaining angles being always acutt. PROP. X. THEOR. The angles at the base of an isosceles triangle are equal. The angles BAC and BCA at the base of the isosceles triangle ABC are equal. For draw (I. 5.) BD bisecting... | |
 | John Playfair - Circle-squaring - 1819 - 350 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...another ; and if the equal sides be produced, the angles upon the other side of the base shall also be equal. Let ABC be an isosceles triangle, of which the... | |
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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. 
