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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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Elements of Geometry, Conic Sections, and Plane Trigonometry

Elias Loomis - 1871 - 58 sider
...straight line makes w:tk anothei,upi* one side of it, are either two right angles, cr are together to two right angles. Let the straight line AB make with CD, upon one side of it, the angles ABC, ABD ; these are either two right angles, or are toTethiir equal to two right angles. ^or if the...
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The Elements of Plane and Spherical Trigonometry ...

Alfred Challice Johnson - 1871
...(Eue. L, 5, б.) 2. 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, or 180°. (Eue. I., 13.) 3. If two straight l1nes cut one another, the vertical or opposite angles...
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The Acting Teacher's and Student's in Training Guide and Text Book for ...

Henry Major - 1873
...angles. Let the straight line AB make with CD, upon one jlide 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 ; but, if not, from the point B...
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Pure mathematics, Volum 1

Edward Atkins - 1874
...Proposition 13. — Theorem. 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 angles shall either be two right angles, or shall together be equal to two right angles. PROOF. —...
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The Elements of Euclid, containing the first six books, with a selection of ...

Euclides - 1874
...PROPOSITION 13. — Theorem. The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to...straight line AB make with CD upon one side of it, the Then the angles CBA, ABD shall be either two right angles, or shall together equal to two right angles....
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Euclidian Geometry

Francis Cuthbertson - 1874 - 349 sider
...GHK. PROPOSITION IX. 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...straight line AB make with CD upon one side of it the L s ABC, ABD. These shall either be two right L s; C or shall together be = two right L s. If the then...
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A School Euclid. Being Books I.&II. of Euclid's Elements. With Notes ...

Euclides - 1874
...The anr/les which one straight line makes with another straight line on one side of it, either are two right angles, or are together equal to two right angles. Let the straight line AJB make with the straight fine CD, on one side of it, the angles CBA, A 1. B ABD : these either are...
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Elements of geometry, based on Euclid, books i-iii

Edward Atkins - 1876 - 119 sider
...Proposition 13. — Theorem. The angles which one straight Una makes witJi 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 angles shall either be two right angles, or shall together be equal to two right angles. PROOF. —...
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Primer of geometry

Francis Cuthbertson (geometer.) - 1876
...QEF PROPOSITION XTV. The angles which one straight line makes with anotJier upon one side of it are either two right angles or are together equal to two...straight line AB make with CD upon one side of it the L s ABC, ABD. These shall either be two right angles or shall together be equal to two right angles....
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Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1876 - 403 sider
...PROPOSITION XIIR THEOREM. The angles which one straight line makes with another upon one tide Of it, are either two right angles, or are together equal to two right angles. Let the straight line AS make with CD, upon one side of it, the angles CBA, ABD. Then these shall be either two right angles,...
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