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" The angles which one straight line makes with another upon one side of i't, are either two right angles, or are together eqval to two right angles. "
Elements of Geometry: Containing the First Six Books of Euclid, with a ... - Σελίδα 17
των Euclid, John Playfair - 1853 - 317 σελίδες
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Elements of Geometry and Conic Sections

Elias Loomis - 1858 - 234 σελίδες
...straight line makes w^'tk another, upj^ one side of it, are either two right angles, cr are together eqvj( 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 together equal to two right angles. For if the...

Examination papers used at the examinations for direct commissions [&c.].

War office - 1858 - 12 σελίδες
...(2) 901. •• Euclid. 1. 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. 2. The straight lines which join the extremities of two equal and parallel straight lines towards the...

The Practice of Engineering Field Work, Applied to Land, Hydrographic, and ...

W. Davis Haskoll - 1858 - 324 σελίδες
...: — The 13th, Book I. 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. The 14th, Book I. If at a point in a straight line, two other straight lines, upon the opposite sides...

Examination papers used at the examinations for admission to the Royal ...

Sandhurst roy. military coll - 1859 - 1869 σελίδες
...to another straight line ? 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. 2. The opposite sides and angles of parallelograms are equal to one another, and the diameter bisects...

Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1860 - 361 σελίδες
...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. Then these shall be either two right angles, or, shall be together, equal to two right angles. £ A...

The popular educator, Τόμος 3

Popular educator - 1860
...make with D c, upon one side of it, the two angles c BA Fig. 13. and AB D. These angles are ei-.her two right angles, or are together equal to two right angles. For, if the angle CBA, be equal to the D angle ADD, then each of them is a light angle, by Def. 10. But, if the angle cn A be not equal...

Euclid's Elements of plane geometry [book 1-6] explicitly enunciated, by J ...

Euclides - 1860
...Given the straight line AB making with CD, upon one side of it, the angles CBA and ABD ; to prove that these are either two right angles, or are together equal to two right angles. (Dem.) For, if the angle CBA be equal to ABD, each of them is a right angle (Def. 11); but, if not,...

The examination papers as set for the preliminary literary examination of ...

Royal college of surgeons of England - 1860
...trapezium, a rectangle. 3. 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. 4. If from the ends of a side of a triangle, there be drawn two straight lines to a point within the...

ELEMENTS OF GEOMETRY AND CONIC SECTIONS

ELIAS LOOMIS, LL.D. - 1861
...straight line makes w^th another,upon one side of it, are either two right angles, or are together io 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 together equal to two right angles. A B *f not,...

The Projection and Calculation of the Sphere for Young Sea Officers Being a ...

S. M. Saxby - 1861 - 112 σελίδες
...advantage. Book I. XIII. — 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. Departing from the precise language of absolute and complete proof (for obvious reasons), we may say...




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