By T. H. Eagles
The looks of one other text-book on Geometry could be thought of to call for an apology, yet I enterprise to pray that an exam of the next pages will shew them to vary significantly from any latest treatise. The extending use of photograph tools within the resolution of many sensible engineering difficulties has looked as if it would me to call for a corresponding extension within the perform of drawing the curves on which such suggestions may possibly usually rely, and, although the homes of conic sections were mentioned completely either geometrically and analytically, there's as far as i'm conscious no publication treating of the particular delineation of the curves from given facts to something just like the volume right here tried. Independently in spite of the fact that in their utilized use, the issues normally will, i feel, be discovered valuable purely as drawing routines in technological know-how and different faculties. loads of consciousness is dedicated to the development of normal polygons, circles packed into one other circle and comparable fancy figures, via equipment which no sensible draughtsman ever makes use of, whereas the development of an ellipse is on the so much restricted to drawing it from the imperative axes or from a couple of conjugate diameters; and the time spent on those and related workouts may possibly, i believe, E.
(Typographical mistakes above are as a result of OCR software program and do not happen within the book.)
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