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 Βιβλία Βιβλία 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
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - 1806 - 518 σελίδες
...the one side of it, are either two right angles, or are together equal to two right angles. Book I. Let the straight line AB make with CD, upon one side of it, *— v— ' the angles CBA, ABD; these are either two right angles, or are together equal to two right... ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1810 - 518 σελίδες
...the one side of it, are either two right angles, or are together equal to two right angles. Book I. Let the straight line AB make with CD, upon one side...if the angle CBA be equal to ABD, each of them is a AEA D B CD fi a def. 10. right • angle; but, if not, from the point B draw BE at right b 11. 1. angles... ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 528 σελίδες
...equal to two riglit angljSs. BouK I.. Let the straight line AB make with CD, upon one side v-*"V-' of it, the angles CBA> ABD : these are either two...equal to two right angles. • * For if the angle CB A be equal to ABD, each of them is a % A ' E DB D B C 1 Def. 10. right4 angle; but if not, from... ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - 1821 - 516 σελίδες
...line makes with another upon the one side of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make...angles, or are together equal to two right angles. PROP. XVI. THEOR. IF one side of a triangle be produced, the exterior angle is greater than either... ## The Elements of geometry [Euclid book 1-3] in general terms, with notes &c ...

Euclides - 1821
...former (per 8th ) PROP. 13, THEOR. WTten a right line standing upon another makes angles with it, they are either two right angles or are together equal to two right angles, If the right line standing on the other be perpendicular to it, the angles are both right ; if not,... ## A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - 1825 - 372 σελίδες
...one side of it, are either two right angles, orare together equal to two right angles. angles СВЛ, ABD ; these are either two right angles, or are together...For if the angle CBA be equal to ABD, each of them i« a right (Def. 10.) angle ; but; if not',' from the point В draw BE at right angles (1 1 Л .)... ## Elements of Arithmetic, Algebra, and Geometry

George Lees - 1826
...is called a perpendicular to it. •D OF GEOMETRY. with another CD, upon one side of it, are eitlier two right angles, or are, together, equal to two right angles. For, if AB be perpendicular to CD, then each of the angles ABC, ABD, is a right angle ; and, therefore, are,... ## The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ...

Robert Simson - 1827 - 513 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...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... ## The Elements of Euclid: Viz, the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - 1829 - 516 σελίδες
...line makes with another upon the one side of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make...angles CBA, ABD ; these are either two right angles, of are together equal to two right angles. For, if the angle CBA be equal to ABD, each of them is a... ## Elements of geometry: Being chiefly a selection from Playfair's geometry

John Playfair - 1829 - 186 σελίδες
...THEOREM. The two angles which one straight line makes with another, on one side of it, are together equal to two right angles* Let the straight line AB make with CD, on one side of CD, the angles ABC, ABD; these are together equal to two right angles. r D B £T B G...