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All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ... - Página 28
por Euclid - 1835 - 513 páginas
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## Guide to preliminary army examination

John Gibson - 1881
...EFD of the triangle DEF is subtended by the greater side, or has the greater side opposite to it. 3. All the interior angles of any rectilineal figure,...twice as many right angles as the figure has sides. 4. Describe a parallelogram that shall be equal to a given triangle BCD, and have one of its angles...
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## The Cambridge Examiner, Volumen1

1881
...to the hypotenuse and one side of the other, the triangles are equal in every respect. 4 The sum of the interior angles of any rectilineal figure together with four right angles, equals twice as many right angles as the figure has sides. 5. Equal triangles upon equal bases in the...
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## The papers set at the professional preliminary examination

College of preceptors - 1882
...the proofs) of the subsequent propositions for the demonstration of which this one is referred to. 5. All the interior angles of any rectilineal figure,...twice as many right angles as the figure has sides. 6. The opposite sides and angles of a parallelogram are equal ; and the diameter bisects the parallelogram....
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## The Cambridge Examiner, Volumen2

1882
...and the side opposite to the equal .es also equal, the triangles must be equal in every respect. 4 All the interior angles of any rectilineal figure...twice as many right angles as the figure has sides. 5. Equal triangles upon equal bases in the same straight line and towards the same parts are between...
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## The Competitor, Volúmenes1-2

1882
...is 60°, or 66* 66' 66"-6. In corollaries to the same proposition it is shown that all the internal angles of any rectilineal figure, together with four...twice as many right angles as the figure has sides ; also, that all the external angles of any rectilineal figure formed by producing the sides in the...
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## Gibson's London matriculation guide, by J. Gibson [and others].

1882 - 376 páginas
...triangle are equal to two right angles; and that all the interior angles of any rectilineal n'gure, together with four right angles, are equal to twice as many right angles as the figure has sides. 3. If the square described upon one of the sides of a triangle is equal to the squares described upon...
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## Class lessons on Euclid

Marianne Nops - 1882
...two-thirds of a right angle or 60°. III. All the interior angles of any rectilineal figure added to four right angles are equal to twice as many right angles as the figure has sides. Now, any figure can be divided into as many triangles as it has sides by drawing lines from each of...
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## The Practical Teacher; with which is Incorporated the Practical ..., Volumen2

Joseph Hughes - 1883
...passage read out by the Inspector. Euclid. [AH generally understood abbreviations for words may be used.] 1. All the interior angles of any rectilineal figure...twice as many right angles as the figure has sides. See Corollary to Euclid I. 32. If the figure be equiangular and four interior angles be equal to seven...
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## The Practical Teacher, Volumen2

1883
...of the passage read out by Euclid. [All generally understood abbreviations for irorJs may be used.] 1. All the interior angles of any rectilineal figure...twice as many right angles as the figure has sides. See Corollary to Euclid I. 32. If the figure be equiangular and four interior angles be e ]ual to seven...
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## The Elements of Euclid for the Use of Schools and Colleges: Comprising the ...

Euclid, Isaac Todhunter - 1883 - 426 páginas
...right angles. [Axiom 1. Wherefore, if a side of any triangle Sic. QBD EUCLID'S ELEMENTS. COROLLARY 1. All the interior angles of any rectilineal figure,...equal to twice as many right angles as the figure has side?. For any rectilineal figure ABODE can be divided into as many triangles as the figure has sides,...
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