| Robert Simson - Trigonometry - 1806 - 548 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 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,... | |
| 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... | |
| John Gummere - Surveying - 1814 - 400 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... | |
| John Playfair - Circle-squaring - 1819 - 348 pages
...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 also be equal. Let ABC be an isosceles... | |
| George Crabb - Industrial arts - 1823 - 732 pages
...or legs equal. According to the fifth proposition of the first book of Euclid's elements, the angles **at the base of an isosceles triangle are equal to one another.** ISOSTE'MONES (Bot.) a name given by Haller to one of his classes of plants. [SO'TONl (Med.) an epithet... | |
| Peter Nicholson - Mathematics - 1825 - 1046 pages
...opposite shall be equal, each to each. Which was to be demonstrated. Proposition. V. Theorem. 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 iide of the base shall be equal. Let ABC be an Isosceles triangle,... | |
| Robert Simson - Trigonometry - 1827 - 546 pages
...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 be equal. Let ABC be... | |
| Euclides - 1834 - 518 pages
...each to each. Which was to be demonstrated. PROPOSITION V. Wtft A ivMJUu. ftT THEOR. — The angles **at the base of an isosceles triangle are equal to one another ; and if the equal** tides be produced, the angles upon the other side of the base shall be equal, t* D and E : the angle... | |
| Euclid - 1835 - 540 pages
...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 be equal. Let ABC be an Isosceles triangle,... | |
| John Playfair - Euclid's Elements - 1835 - 336 pages
...three are equal also ; that is, AB=DE, AC = DF, and the angle BAC= DEF. PROP. III. THEOR. The angles **at the base of an isosceles triangle are equal to one another** : namely, those to which the equal sides are opposite. If the triangle ABC have the side AC equal to... | |
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