Αναζήτηση Εικόνες Χάρτες Play YouTube Ειδήσεις Gmail Drive Περισσότερα »
Είσοδος
 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's plane geometry, practically applied; book i, with explanatory notes ... - Σελίδα 12
των Euclides - 1863
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο

## The definitions, postulates, axioms, and enunciations of the propositions of ...

Euclides - 1848 - 52 σελίδες
...of two straight lines to one another, which meet together, but are not in the same straight line. X. When a straight line standing on another straight...other, each of these angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it. XI. An obtuse angle...

## Lessons on the delineation of form

Charles Richson - 1848 - 98 σελίδες
...two straight lines to one another, which meet together, but are not in the same straight line." 2. "When a straight line standing on another straight...other, each of these angles is called a right angle; and the straight line which stands on the other is called & perpendicular to it." QUESTION upon these...

## The first three books of Euclid's Elements of geometry, with theorems and ...

Euclid, Thomas Tate - 1849 - 120 σελίδες
...one angle at a point, it may be expressed by a letter placed at that point; as the ;ingle at E." ' x. 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...

## Elements of Geometry and Trigonometry Translated from the French of A.M ...

Charles Davies - 1849 - 372 σελίδες
...When a straight line AB meets another straight line CD, so as to make the adjacent angles BAC, BAD, equal to each other, each of these angles is called a right angle ; and the line AB is said to be perpendicular to CD. = 11. Every angle BAC, less than a 1 right angle,...

## An Epitome of Navigation and Nautical Astronomy, with Improved Lunar Tables ...

Janet Taylor - 1851 - 674 σελίδες
...points and quarter-points of the compass, cut off from the circle by the lines which form the angle. 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...

## The first two books of the Elements of Euclid, with additional figures ...

Euclides - 1852 - 152 σελίδες
...shall coincide with A. Observe that DE will fall nearer to AC or EF than BA does.] B 2 BOOK I. BOOK I. 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...

## The geometry, by T. S. Davies. Conic sections, by Stephen Fenwick

Royal Military Academy, Woolwich - 1853 - 400 σελίδες
...only one angle at a point, it may be expressed by a letter placed at that point : as the angle at E. 10. 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...

## The synoptical Euclid; being the first four books of Euclid's Elements of ...

Euclides - 1853 - 146 σελίδες
...CG; therefore (I. 8.) 3. The angle CHF is equal to the angle CHG; and they are adjacent angles; but when a straight line standing on another straight line makes the adjacent angles equal to one another, each of them is a right angle, and the straight line which stands upon the other is called...

## The first six books of the Elements of Euclid, with numerous exercises

Euclides - 1853 - 176 σελίδες
...one angle at a point, it may be expressed by a letter placed at that point ; as the angle at e. X. When a straight line standing on 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...

## The Elements of geometry; or, The first six books, with the eleventh and ...

Euclides - 1855 - 270 σελίδες
...is put in inverted commas, as being Dr. Simson's addition ; it is very necessary to be remembered. X When a straight line standing on another straight line makes the adjacent angles equal to one another, each of these angles is called a right angle ; and the straight line which stands on the...