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If a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are equal to two right angles.
The Practice of Engineering Field Work, Applied to Land, Hydrographic, and ... - Página 50
por W. Davis Haskoll - 1858 - 324 páginas
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## The Journal of Sacred Literature, Volumen7;Volumen25

John Kitto - 1854
...mind. ' § 65. To illustrate this doctrine by an example taken from the science of magnitude. That the three interior angles of every triangle are equal to two right angles, is a truth which, if the demonstration has been followed, cannot but be believed, when the subject...
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## National Society's Monthly Paper

1855
...line perpendicular to a given straight line of an unlimited length, from u given point without it. 3. If a side of any triangle be produced, the exterior...and the three interior angles of every triangle are together equal to two right angles. 4. Equal triangles upon the same hase and upon the same side of...
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## Minutes of the Committee of Council on Education

...straight line of an unlimited length, from a given point without it. 3. If a side of any triangle he produced, the exterior angle is equal to the two interior...and the three interior angles of every triangle are together equal to two right angles. 4. Equal triangles upon the same base and upon the same side of...
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## Elements of Geometry: Containing the First Six Books of Euclid with a ...

John Playfair - 1855 - 318 páginas
...EAF is drawn through the given point A parallel to the given straight line BC. PROP. XXXII. THEOR. If a side of any triangle be produced, the exterior angle is equal to the tivo interior and opposite angles ; and the three interior angles of tvery triangle are equal to two...
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## Cambridge examination papers: a suppl. to the University calendar, 1856-59

...into two equal angles. 2. Any two sides of a triangle are together greater than the third side. 4. If a side of any triangle be produced, the exterior...angles of every triangle are equal to two right angles. If two sides of any triangle be produced, the two exterior angles are together greater than two right...
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## Manual of Method for the use of teachers in elementary schools

W. F. RICHARDS - 1856 - 184 páginas
...opposite to equal sides, show that these two triangles are not necessarily equal to one another. 4. If a side of any triangle be produced, the exterior...and the three interior angles of every triangle are together equal to two right angles. 5. If a straight line be divided into any two parts, the square...
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## The geometry of the three first books of Euclid, by direct proof from ...

Euclides - 1856
...together equal to the two FBC, DBC, that is. to two right angles. XIV.— EUCLID I. 32. If one side of a triangle be produced, the exterior angle is equal...the two interior and opposite angles; and the three angles of every triangle are together equal to two right angles. Let ABC (Fig. 9) be a triangle, and...
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## Elements of Geometry: Containing the First Six Books of Euclid with a ...

John Playfair - 1856 - 318 páginas
...given point A parallel to the given straight line BC. PROP. XXXII. THEOR. If a side of any triangle oe produced, the exterior angle is equal to the two interior and opposite angles ; andlthe three interior angles of every triangle are equal to two right i Let ABC be a triangle, and...
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## Considerations on the Suggestions of the University Commissioners with ...

Henry Latham - 1857 - 59 páginas
...Construct a triangle of which the base, the sum of the other sides, and the vertical angle are given. 2. If a side of any triangle be produced, the exterior...and the three interior angles of every triangle are together equal to two right angles. At what angles are the sides of a regular duodecagon inclined to...
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## Parliamentary Papers, Volumen25

...less than the other two sides of the triangle, but shall contain a greater angle. 3. PKOP. XXXII.— If a side of any triangle be produced, the exterior...and the three interior angles of every triangle are together equal to two right angles. 4. Enunciate and prove the corollaries of the last proposition....
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