Detroit. Public schools. Dept. of instruction, teacher training and research. [from old catalog], Kepler, Frank Roy. [from old catalog] · Detroit · leaf 25
nder, it is necessary to set off along the straight line, 5,-5,distances equal to the length of the arc 1-2. As many dis- 24 tances must be set off as the whole circumference of the cyl-inder has been divided into, making sure to make the lay-out check with the calculated circumference. At these… … CD W ^ o / s Vj ^ t
Projection
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