 | G. F. Burn - Geometry - 1903 - 272 pages
...: When a straight line standing on another straight line makes the adjacent angles equal ' pjg. 5. 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. Parallel lines are such that,... | |
 | F. A. Brining, D. N. Avasia - Mechanical drawing - 1913 - 282 pages
...same straight line. B A right angle. — When one straight line meets another straight line so as to make the adjacent angles equal to one another, each of these angles is a right angle, and the lines are said to be perpendicular to each other. ABC and ABD are each right... | |
 | Clarence Deming - Education - 1915 - 332 pages
...of a sermon of the Class of '52 reads: "When a straight line standing on another straight line makes the adjacent angles equal to one another each of these angles is called a three and a half and the line thus placed is called a rush." RHYMES OF THE BURIAL In the poetry of... | |
 | William Henry Blythe - 1900 - 228 pages
...straight line meets another straight line so as to make the adjacent angles on opposite sides of it equal to one another, each of these angles is called a right angle, and the first straight line is said to be a perpendicular to the second In constructing the figures of Euclid's... | |
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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. 
