 | Francis Cuthbertson (geometer.) - 1876 - 102 sider
...if two straight lines &c. QED RIGHT ANGLES. DEFINITION. When one straight line, standing on another straight line, makes the adjacent angles equal to one another, each of them is called a right angle ; and the straight line which stands upon the other is - said to be perpendicular... | |
 | George Elliot Voyle, G. de Saint-Clair-Stevenson - 1876 - 676 sider
...substantive rank (viile Rank) in the army. Perpendicular — When a straight line standing on another straight line makes the adjacent angles equal to one another, each of these angles is a right angle, and the line perpendicular. Persian Wheel — A contrivance for raising... | |
 | Edward Atkins - 1876 - 130 sider
...to the angle CHG (I. 8), 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 the angles is called a right angle, and the straight line which stands on the other is called a perpendicular... | |
 | Robert Potts - 1876 - 446 sider
...is contained by DB. CB, is called the angle DBC, or CUD. 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 other is called a... | |
 | Richard Wormell - 1876 - 268 sider
...vertex, and are on opposite sides of a common side. 1 8. When one 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 other is said to be... | |
 | Euclides - 1877 - 58 sider
...leave it uncertain which of the three angles was intended. 9. 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 other is said to be... | |
 | Edward Atkins - 1877 - 72 sider
...the angle ECP (I. 8) ; 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 the angles is called a. right angle (Dcf. 10); Hake CK = CD ami A DF.F cquihiteiul. '. DCF = '! F.Cf.... | |
 | Isaac Todhunter - 1877 - 452 sider
...This is put into a more precise form in the following manner: 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... | |
 | Āryabhaṭa - 1878 - 100 sider
...an angle and is thus expressed : " Angle AB 0." A BC XVI. 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 other is called a... | |
 | Alfred Hiley - 1879 - 228 sider
...AC, but upon the extent or opening between the lines. XI. When a straight line standing upon another straight line makes the adjacent angles equal to one another, each of them is called a right A angle ; and the straight line standing upon the other is called a perpendicular to... | |
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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. 
