 | Euclides - 1852 - 152 páginas
...coincide with A. Observe that DE will fall nearer to AC or EF than BA does.] B 2 BOOK I. BOOK I. X. When a straight line standing on another straight...straight line which stands on the other is called _ a perpendicular to it. [That there may be two such angles equal, may be exhibited by the following... | |
 | Popular educator - 1852 - 842 páginas
...line makes the adjacent angla equal to one another, each of these angles is called a right ancle ; and the straight line which stands on the other is called a perpendicular to it. By borrowing the terms Tertical and horizontal from the language of Phynics, we may define a right... | |
 | Euclides - 1853 - 146 páginas
...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...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... | |
 | Euclid, John Playfair - 1853 - 336 páginas
...an' gle at a point, it may be expressed by a letter placed at that point; as the ' angle at E.' 7. When a straight line standing on another straight...stands on the other, is called a perpendicular to it. 8. An obtuse angle is that which is greater than a right angle. "9. An acute angle is that which is... | |
 | Euclides - 1853 - 176 páginas
...only one angle at a point, it may be expressed by a letter placed at that point ; as the angle at eX. When a straight line standing on another straight...equal to one another, each of the angles is called a riglit angle ; and the straight line which stands on the other is called a perpendicular to it. XI.... | |
 | John Playfair - 1855 - 334 páginas
...an' gle at a point, it may be expressed by a letter placed at that point; as the «angle at E.' 7. When a straight line standing on another straight...stands on the other, is called a perpendicular to it. 8. An obtuse angle is that which is greater than a right angle. 9. An acute angle is that which is... | |
 | Euclides - 1855 - 270 páginas
...is put in inverted commas, as being Dr. Simson's addition ; it is very necessary to be remembered. When a straight line standing on another straight...the adjacent angles equal to one another, each of these angles is called a right angle; and the straight line which stands on the other is called a perpendicular... | |
 | John Playfair - 1855 - 340 páginas
...equal (8. 1.) to the angle CHG ; and they are adjacent angles ; now when a straight line standing on a 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 a perpendicular... | |
 | Robert Rawson - 1856 - 178 páginas
...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...stands on the other is called a perpendicular to it. XI. An obtuse angle is that which is greater than a right angle. xn. An acute angle is that which is... | |
 | John Playfair - 1856 - 346 páginas
...an' gle at a point, it may be expressed by a letter placed at that point; as the ' angle at E.' 7. When a straight line standing on another straight...stands on the other, is called a perpendicular to it. 8. An obtuse angle is that which is greater than a right angle. 9. An acute angle is that which is... | |
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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. VIII. An obtuse angle is... 
