 | Marianne Nops - 1882 - 278 pages
...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.' 11. 'An obtuse angle is that which is greater than a right angle.' 12.... | |
 | Euclid, Isaac Todhunter - Euclid's Elements - 1883 - 428 pages
...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. 11. An obtuse angle is that which is greater than a right angle. 12.... | |
 | William Dodds - 1883 - 198 pages
...straight line GD, standing on another straight line AB, makes the angle GDA equal to the angle GDB, each of these angles is called a right angle, and the straight line GD, standing on the other AB, is A ' j , ? ni • i_ ii Right Anglo. said to be drawn at right angles... | |
 | Euclides - 1884 - 214 pages
...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 perpendicular to it. XL An obtuse angle is that which is greater than a right angle. XII.... | |
 | 1884 - 434 pages
...When a straight bine 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 perpendicular to it." Let us then take two sets of such lines and apply one to tjie other,... | |
 | Euclides - 1884 - 182 pages
...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 the straight line which stands on the other is called a perpendicular to it. 11. An obtuse angle is that which is greater than a right angle. 12.... | |
 | Euclides - 1884 - 434 pages
...line stands on another straight line, and makes the adjacent angles equal to each other, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it. CUD Thus, if AB stands on CD in such a manner that the adjacent angles... | |
 | Stewart W. and co - 1884 - 272 pages
...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. XI. An obtuse angle is greater than a right angle. XII. An acute angle... | |
 | Mathematics - 1885 - 150 pages
...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 perpendicular to it." Let us then take two sets of such lines and apply one to the other,... | |
 | Joseph Ray - Arithmetic - 1885 - 358 pages
...stands on another so that it makes with it two equal angles, each of Right angle. Hisht these angles is a RIGHT ANGLE; and the straight line which stands on the other is said to be PERPENDICULAR to it, or at RIGHT ANGLES to it. A/ obt«se /Acute 3. An OBTUSE ANGLE is greater than a ansle, /ansle.... | |
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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. 
