Detroit. Public schools. Dept. of instruction, teacher training and research. [from old catalog], Kepler, Frank Roy. [from old catalog] · Detroit · leaf 11
ction,its view on that plane is always shorter than the true lengthof the Une, Fig. 9. (10) A Une parallel to both H and V has for its twoviews, lines parallel to the Ground Line, both of which areequal in length to the line itself. (11) If a hne is parallel to neither plane of projection,both… … In general, the projection of a line parallel to a plane ofprojection is equal to the line itself. And, the projection of aline at an angle with a plane of projection is shorter than theline itself. A projection of a line is either equal to or shorterthan the line itself. Since surfaces are bounded…
Projection
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