 | Charles Davies, William Guy Peck - Mathematics - 1855 - 628 pages
...be remarked : 1st. Both projections of a straight line arc straight lines : if a given straight line be parallel to either plane of projection, its projection on that plane will be parallel to the line itself, and its projection in the other plane will be parallel to the ground line.... | |
 | Charles Davies, William Guy Peck - Electronic book - 1855 - 592 pages
...remarked : 1st. Both projections of a straight line are straight line« : if a given straight line be parallel to either plane of projection, its projection on that plane will he parallel to the line itself, and its projection in the other plane will be parallel to the ground... | |
 | Samuel Edward Warren - Geometrical drawing - 1861 - 160 pages
...moment's reflection upon these facts will lead at once to the principle, that when an arc, or circle, is parallel to either plane of projection, its projection on that plane will be an equal arc, or circle, and on the other plane, a straight line parallel to the ground line. b. a""... | |
 | Albert Ensign Church - Geometry, Descriptive - 1865 - 160 pages
...perpendicular to the horizontal plane : TO is its horizontal, and m'o its vertical projection. If the line be parallel to either plane of projection, its projection on that plane will evidently be parallel to the line itself, and its projection on the other plane will be parallel to... | |
 | Albert Ensign Church - Geometry, Descriptive - 1867 - 210 pages
...perpendicular to the horizontal plane: m is its horizontal, and m'o its vertical projection. If the line be parallel to either plane of projection, its projection on that plane will evidently be parallel to the line itself, and its projection on the other plane will be parallel to... | |
 | Samuel Edward Warren - Geometrical drawing - 1867 - 180 pages
...moment's reflection upon these facts will lead at once to the principle, that when an arc, or circle, is parallel to either plane of projection, its projection on that plane will be an equal arc, or circle, and on the other plane, a straight line parallel to the ground line. b. a""... | |
 | Albert Ensign Church - Mathematics - 1868 - 222 pages
...If the plane of the curve be perpendicular to the ground line, both projections will be right line#, perpendicular to the ground line, and the curve will...on that plane will be equal to itself, since each clement of the curve will be projected into an equal element, Art. (14). Its projection on the other... | |
 | Lewis Muhlenberg Haupt - Mechanical drawing - 1881 - 84 pages
...the conditions are similar to the above, only interchanging V and H. In general, therefore, if a line be PARALLEL to either plane of projection, its projection on that plane will be parallel to the line itself, and its other projection will be parallel to the ground line. Also, the... | |
 | Linus Faunce - Mechanical drawing - 1887 - 176 pages
...on that plane, and its other projection is in the ground line. 2nd. If a right line is perpendicular to either plane of projection, its projection on that plane will be a point, and its projection on the other plane will be perpendicular to the ground line and equal in... | |
 | Linus Faunce - Mechanical drawing - 1890 - 172 pages
...on that plane, and its other projection is in the ground line. 2nd. If a right line is perpendicular to either plane of projection, its projection on that plane will be a point, and its projection on the other plane will be perpendicular to the ground line and equal in... | |
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... perpendicular to either plane of projection, its projection on that plane will be a point, and its projection on the other plane will be perpendicular to the ground line. 
