 | Peter Nicholson - Masonry - 1828 - 276 pages
...horizontal projection above, the ground-line. The reciprocals of these propositions are also true. If a line be parallel to one of the planes of projection, its projection upon the other plane will be parallel to the ground-line. Thus, for example, if a line be parallel... | |
 | Edward Shaw - Architecture - 1832 - 244 pages
...horizontal projection above, the ground-line. The reciprocals of these propositions are also true. If a line be parallel to one of the planes of projection, its projection upon the other plane will be parallel to the ground-line. Thus, for example, if a line be parallel... | |
 | Edward Shaw - Architecture - 1832 - 402 pages
...horizontal projection above, the ground-line. The reciprocals of these propositions are also true. If a line be parallel to one of the planes of projection, its projection upon the other plane will be parallel to the ground-line. Thus, for example, if a line be parallel... | |
 | Edward Shaw - Masonry - 1846 - 342 pages
...horizontal projection above, the ground-line. The reciprocals of these propositions are also true. If a line be parallel to one of the planes of projection, its projection upon the other plane will be parallel to the ground-line. Thus, for example, if aline be parallel to... | |
 | Charles Davies - Geometry, Descriptive - 1851 - 254 pages
...projecting plane of that line, and will pierce the plane of projection in the trace of the projecting ptane which contains them. § 26. The two projections of...of projection to which the line is parallel. § 28. IJ a line be perpendicular to one of the planes of projection, its projection on that plane is a point... | |
 | Charles Davies - Geometry, Descriptive - 1854 - 262 pages
...Hence, the line of which AB, A'B' are the projections, is the line of intersection of these two phnes, and since the planes are determined in position, their...plane of projection to which the line is parallel. § 'J8. IJ a line be perpendicular to one of the. planes of projection, its projection on that plane... | |
 | Dennis Hart Mahan - Drawing instruments - 1855 - 240 pages
...one plane of projection, its projection on that plane is equal to the length of the line, and that its projection on the other plane is parallel to the ground line. In this case we see that the top of the prism, which is a hexagon parallel to the horizontal plane,... | |
 | Samuel Edward Warren - Geometrical drawing - 1861 - 154 pages
...parallel to either plane of projection, its projection on that plane is equal and parallel to itself, and its projection on the other plane is parallel to the ground line. 10. The preceding remark serves to show how to find the true length of a line, when its projections... | |
 | Charles Davies - Geometry, Descriptive - 1866 - 254 pages
...projecting planes of the line. § 25. The projection of a right line on either plane of projection, is made up of the projections of all the points of...of projection to which the line is parallel. § 28. IJ a line be perpendicular to one of the planes of projection, its projection on that plane is a point... | |
 | Samuel Edward Warren - Geometrical drawing - 1867 - 178 pages
...parallel to either plane of projection, its projection on that plane is equal and parallel to itself, and its projection on the other plane is parallel to the ground line. 10. The preceding remark serves to show how to find the true length of a line, when its projections... | |
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A'B' are the projections, is the line of intersection of these two planes, and since the planes are determined in position, their intersection is also determined. If the horizontal projection only be given, the line is somewhere in a plane passing through... 
