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" The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it, the angles CBA, ABD : these shall either be... "
Elements of Geometry: Containing the First Six Books of Euclid, with a ... - Side 21
av John Playfair - 1847 - 317 sider
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The Elements of Euclid; viz. the first six books,together with the eleventh ...

Euclides - 1841 - 351 sider
...done. PROP. XIII. THEORThe angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to...CD, upon one side of it, the angles CBA, ABD; these shall be either two right angles, or shall be together equal to two right angles. For if the angle...
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Register

University of Cambridge - 1841
...be employed.] t* THE angles which one straight line makes with another upon the une side of it are either two right angles, or are together equal to two right angles. 2. Describe an isosceles triangle, having each of the angles at the base double of the third angle....
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Elements of geometry: consisting of the first four,and the sixth, books of ...

Euclides - 1842
...angle. PROP. XIII. THEOR. THE angles which one straight line makes with another upon one side of it are either two right angles, or are together equal to...CD, upon one side of it, the angles CBA, ABD: these shall either be two right angles, or shall together be equal to two right angles. For if the angle...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1842 - 317 sider
...angles. Let the straight line AB make with CD, upon one side of it the angles CBA, ABD ; these are either two right angles, or are together equal to two right angles. For, if the angle CBA be equal to ABD, each of them is a right angle (Def. 7.) ; bnt, if not, from...
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Chambers's information for the people, ed. by W. and R. Chambers, Volum 2

Chambers W. and R., ltd - 1842
...because, as lias been already stated, tbe angles made by one straight line falling upon another, arc either two right angles, or are together equal to two right angles ; therefore, the angles CBA, BAG, ACB, are equal to two right angles, or 180 degrees. There ore several...
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General Report on Public Instruction in the Bengal Presidency

1843
...MATHEMATICS. SENIOR. 1. The angles which one right line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. 2. Define a parallelogram. Parallelograms on the same base and between the same parallels are equal...
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Euclid's Elements of geometry [book 1-6, 11,12] with explanatory notes ...

Euclides - 1845
...PROPOSITION XIII. THEOREM, The angles which one straight line makes wilh another upon one side of it, are either two right angles, or are together equal to...with CD, upon one side of it, the angles CBA, ABD. Then these shall be either two right angles, or shall be together, equal to two right angles. E A i...
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The First Six, and the Eleventh and Twelfth Books of Euclid's Elements: With ...

Euclid, James Thomson - 1845 - 352 sider
...PROP. XIII. THEOR. — The angles which one straight line makes with another upon the one side of it are together equal to two right angles. Let the straight...upon one side of it, the angles CBA, ABD ; these are together equal to two right angles. For, if the ancle CBA be equal to ABD, each of them (I. def. 8)...
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Euclid in Paragraphs: The Elements of Euclid: Containing the First Six Books ...

Euclid - 1845 - 199 sider
...PROPOSITION XIII. THEOR. — The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. EUCLID'S ELEMENTS. For if the angle CBA be equal to ABD, each of them { 10 DeV. 2 Ax. 2 AX. D CD is...
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A system of practical mathematics; being no.xvi. of a new series of school-books

Scottish school-book assoc - 1845
...The angles ACD and DCB, which one straight line, DC, makes with another, AB, on one side of it, are either two right angles, or are together equal to two right angles. A If the Ls ACD and DCB be equal, each of them is a i'L, (Def. 9.) ; but if they are not equal, conceive...
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