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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.
The Elements of geometry [Euclid book 1-3] in general terms, with notes &c ... - Page 11
by Euclides - 1833

## The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1806 - 518 pages
...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, of which the side...

## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Euclid's Elements - 1806 - 311 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...

## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - Geometry - 1810 - 518 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...

## Pantologia. A new (cabinet) cyclopędia, by J.M. Good, O. Gregory ..., Volume 5

John Mason Good - 1813
...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«**...

## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Circle-squaring - 1819 - 333 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 also be equal. Let ABC be an isosceles triangle, of which the...

## The First Six Books with Notes

Euclid - 1822 - 179 pages
...equal (4). PROP- V. THEOR. In an isosceles triangle (BAC) the angles at the base Fig. 18. (due andACB) are equal to one another; and if the equal sides be produced, the angles below the base ( FBC and GCB) shall also be equal. Take any point F in the side produced, cut off AG (i) Prop. 3....

## A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - Mathematics - 1825 - 372 pages
...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, of which the side...

## The First Six Books of the Elements of Euclid: With Notes

Euclid - Euclid's Elements - 1833 - 183 pages
...equal (3). PROP. V. THEOR. is. 16V In an isosceles triangle (BAG) the angles at the base (ABC and ACB) are equal to one another ; and if the equal sides be produced, the angles below the base (FBC and GCB) shall also be equal. (2) Constr. & Hypoth. Take any point F in the side produced, cut...

## Library of Useful Knowledge: Geometry, plane, solid, and spherical [by ...

Mathematics - 1835
...likewise equal to the angle opposite to the other ; and conversely . . 6 (e) lu au isosceles triangle, 1. The angles at the base are equal to one another ; and if the equal sides are produced, the angles upon the other side of the base are likewise equal . cor, 6 2. The following...

## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1835 - 513 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 side...