Detroit. Public schools. Dept. of instruction, teacher training and research. [from old catalog], Kepler, Frank Roy. [from old catalog] · Detroit · leaf 16
r/G. /6 … rfG. ii is the H projection, ab is the V projection, and mb is the alti-tude of the line AB and of the V projection. In the right tri-angle mon, Fig. 17, make mn equal bm and no equal ab,then mo is the true length of the line AB. Since the trianglesmon, Fig. 17, and AbB, Fig. 16, are equal by…
Projection
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