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 Teokset Teokset 1 - 10 / 133 haulle If a side of any triangle be produced, the exterior angle is equal to the two interior....
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 together equal to two right angles.
The History of Philosophy, from the Earliest Times to the Beginning of the ... - Sivu 388
tekijä(t) William Enfield, Johann Jakob Brucker - 1791 - 628 sivua
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## General Biography: Or, Lives, Critical and Historical, of the Most ..., Nide 8

John Aikin - 1813
...arithmetic, a line to two, a superficies to three, a solid to four. Of the geometrical theorems ascribed to Pythagoras, the following are the principal : that...that the only polygons which will fill up the whole space about a given point, are the equilateral triangle, the square, and the hexagon ; the first to...

## The History of Philosophy: From the Earliest Times to the Beginning ..., Nide 1

William Enfield - 1819
...Porph. n. 30. Jambl. c. xxv. n. 65. " .&lian, 1. xiv. c, 33. "Boeth. deMus. 1. iv. c. 14. Pythagorjis, the following are the principal : that the interior...that the only polygons Which will fill up the whole space about a given point, are the equilateral triangle, the square, and the hexagon ; the first to...

## A Treatise on Practical Gauging

Anthony Nesbit, W. Little - 1822 - 533 sivua
...; the exterior angle ACD is equal to the two interior and opposite angles CAB, ABC; also the three interior angles of every triangle are together equal to two right angles. (Em. I. 32. Simp. I. 9, 10. Em. IL I, 2 J A C THEOREM V. Let the parallelograms ABCD, DBCEbe upon the...

## An Exposition of the Mysteries; Or, Religious Dogmas and Customs of the ...

John Fellows - 1835 - 403 sivua
...arithmetic, a line to two, a superficies to threei a solid to four. Of the geometrical theorems ascribed to Pythagoras, the following are the principal: that...to two right angles; that the only polygons which fill up the whole space about a given point, are the equilateral triangle, the square, and the hexagon...

## Lessons on form; or, Introduction to geometry as given in a Pestalozzian ...

Charles Reiner - 1837
...SUBSTANCE OF SECTION III. / \ 1. Any two angles of a triangle are together less than two right angles. 2. The interior angles of every triangle are together equal to two right angles. 3. A right-angled triangle is that which has a right angle. 5. An acute-angled triangle is that which...

## The First Six and the Eleventh and Twelfth Books of Euclid's Elements: With ...

Euclid - 1837 - 390 sivua
...triangle be produced, the exterior angle is equal to the two interior and remote angles ; and the three interior angles of every triangle are together equal to two right angles. Let the side BC of the triangle ABC be produced to D : the exterior angle A CD is equal to the two...

## The history of literature; or, The rise and progress of language ..., Nide 1

1843
...line to two, a superficies to three, and a solid to four. Of the geometrical theorems ascribed to him, the following are the principal : that the interior...that the only polygons which will fill up the whole space about a given point, are the equilateral triangle, the square, and the hexagon — the first...

## Proceedings

...CLASS-GEOMETRY. 1. The greater side of every triangle has the greater angle opposite to it. 2. The three interior angles of every triangle are together equal to two right angles. 3. Parallelograms upon equal bases, and between the same parallels, are equal. 4. If a straight line...

## Euclid's Elements of geometry [book 1-6, 11,12] with explanatory notes ...

Robert Potts - 1845
...triangle be produced, the exterior angle is equal to the Iwo interior and opposite angles; and Ihe three interior angles of every triangle are together equal to two right angles. Let ABC be a triangle, and let one of its sides BC be produced to D. Then the exterior angle ACD shall...

## The first six and the eleventh and twelfth books of Euclid's Elements; with ...

James Thomson - 1845 - 358 sivua
...produced, (l) the exterior angle is equal to the two interior and remote angles ; and (2) the three interior angles of every triangle are together equal to two right angles. Let ABC be a triangle, and let one of its sides BC be produced to D : (1 ) the exterior angle ACD is...