 | Rufus Putnam - Arithmetic - 1849 - 402 pages
...OR INCLINED LINES change their distance from each other, and would meet if sufficiently extended. 7. AN ANGLE is the opening between two lines which meet in a point. The point of meeting is called the VERTEX of the angle. Thus, the opening between the lines... | |
 | Samuel Prout Newcomb - Children - 1853 - 446 pages
...for they begin at a point, and open wider and wider. L. Well, now I will say what it is exactly : " An angle is the • opening between two lines which meet in a point." P. If you would like to remember more names, I will tell you some. The point of the angle is... | |
 | Malcolm MacVicar - Arithmetic - 1876 - 412 pages
...changes its direction at every point 779. Parallel Lines are lines which have the same direction. 780. An Angle is the opening between two lines which meet in a common point, called the vertex. Angles are of three kinds, thus : (1) a i- a HORIZONTAL. Two Bight Angles. One Sight Angle.... | |
 | Benjamin Franklin Finkel - Mathematics - 1888 - 518 pages
...from tries, tria, three, and angulus, corner, angle) is a polygon bounded by three straight lines. 14. An Angle is the opening between two lines which meet in a point. !1. Straight Angle. 2. Right Angle. rt /~\r 1 • 1 •!• *».Cuw5i 3. Oblique „ „, ..... | |
 | Wilbur Fisk Nichols - 1910 - 236 pages
...not change its direction. 3. A curved line is a line that changes its direction at every point. 4. Parallel lines are lines which have the same direction. 6. An angle is the difference in direction of two lines. 6. Angles are measured by degrees. How many degrees are there... | |
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An angle is the • opening between two lines which meet in a point. 