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 Βιβλία Βιβλία When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle; and the straight line which stands on the other is called a perpendicular to it. Euclid, books i. & ii., with notes, examples, and explanations, by a late ... - Σελίδα 1
των Euclides - 1879
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο ## The Elements of Geometry, Symbolically Arranged

...The extremities of a superficies are lines. VII. A plane superficies is that in which any two «r C angle; and the straight line which stands on the other, is called a perpendicular to it. XI. An obtuse angle is that which is greater than a right angle. XII. An acute angle is that which... ## The First Book of Euclid's Elements, Simplified, Explained, and Illustrated ...

Euclides - 1847
...line, standing on another straight line, makes the adjacent an. gles equal to one another, each of the angles is called a right angle; and the straight line...angle is that which is greater than a right angle. 12. An acute angle is that which is less than a right angle. Thus the angles ABC, ABD are each of them... ## The definitions, postulates, axioms, and enunciations of the propositions of ...

Euclides - 1848
...When a straight line standing on another straight line, makes the adjacent angles equal to each other, each of these angles is called a right angle ; and...stands on the other is called a perpendicular to it. XI. An obtuse angle is that which is greater than a right angle. XII. An acute angle is that which... ## Lessons on the delineation of form

Charles Richson - 1848
..."When a straight line standing on another straight line makes the adjacent angles equal to each other, each of these angles is called a right angle; and...straight line which stands on the other is called & perpendicular to it." QUESTION upon these definitions, if given. 27 II. — To draw four right (... ## The first three books of Euclid's Elements of geometry, with theorems and ...

Euclides, Thomas Tate - 1849 - 108 σελίδες
...line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight...on the other is called a perpendicular — to it. XI. An obtuse angle is that which is greater than a right angle. XII. An acute angle is that which... ## An Epitome of Navigation and Nautical Astronomy, with Improved Lunar Tables ...

Janet Taylor - 1851 - 621 σελίδες
...line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle, and the straight line...stands on the other is called a perpendicular to it : thus the line AC is perpendicular to DB, and makes with it the two adjacent angles CAD, CAB, equal... ## The First Two Books of the Elements of Euclid ... with Additional Figures ...

Euclides - 1852
...line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle; and the straight line...stands on the other is called a perpendicular to it. [That there may be two such angles equal, may be exhibited by the following figures: DC meets the right... ## The geometry, by T. S. Davies. Conic sections, by Stephen Fenwick

...line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight...a perpendicular to it. 11. An obtuse angle is that \vhich is greater than a right angle. 12. An acute angle is that which is less than a right angle.... ## The synoptical Euclid; being the first four books of Euclid's Elements of ...

Euclides - 1853
...line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight...stands on the other is called a perpendicular to it. XI. An obtuse angle is that which is greater than a right angle. XII. An acute angle is that which... ## The first six books of the Elements of Euclid, with numerous exercises

Euclides - 1853 - 147 σελίδες
...another straight line makes the adjacent angles equal to one another, each of the angles is called a rigM angle ; and the straight line which stands on the other is called a perpendicular toit. XI. An obtuse angle is that which is greater than a right angle. XII. An acute angle is that...