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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 also be equal. Let ABC be an isosceles triangle, of which the side AB is equal to AC, and let... "
Elements of geometry, based on Euclid, book i - Page 15
by Edward Atkins - 1877
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Mathematics - 1806 - 320 pages
...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...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 hft- equal...
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The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1806 - 546 pages
...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, of which the side AB is C Book I. equal to AC, and let...
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Pantologia. A new (cabinet) cyclopędia, by J.M. Good, O. Gregory ..., Volume 5

John Mason Good - 1813 - 714 pages
...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«** •fiu:i! to one another, the sides...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 588 pages
...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 be equal. , JL ABC be an isoscefes triangle, of which the side AB is B*o* I. equal...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Circle-squaring - 1819 - 350 pages
...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...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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Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - 354 pages
...• 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 th? base shall also be, equal. Let ABC be an isosceles triangle, of which the side AB is equal t»...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - Geometry - 1821 - 514 pages
...THEOR. THE angles at the base of an isoceles 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 side AB is I i equal to AC, and let the straight...
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A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - Mathematics - 1825 - 1046 pages
...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, 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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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Circle-squaring - 1826 - 326 pages
...at the base of an isoseeles triangle are equal to one another ; and if the equal sides be produeed, the angles upon the other side of the base shall also be equal. Let ABC he an isoseeles triangle, of whieh the side AB is equal to AC, and let the straight lines AB, AC be...
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The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ...

Robert Simson - Trigonometry - 1827 - 546 pages
...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 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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