 C, to D and F, for. the circle DF ; and from A, the projecting point, draw AF/, and AD^, then df will be the tranfverfe axis of the ellipfis. But if D fall beyond the line RE, as. at G,. then: draw. a fine from G backward thro' A to D, and then df is...  Tracts: Containing: I. Mechanics, Or the Doctrine of Motion: II. - Page 203by William Emerson - 1793 - 302 pagesFull view - About this book
 | William Emerson - Mathematics - 1769 - 370 pages
...the ellipfis. But if D fall beyond the line RE, as. at G,. then: draw. a fine from G backward thro' A to D, and then df is the tranfverfe of an hyperbola....an infinite diftance, and then the circle will be projected into a parabola whole vertex is/. Laftly, bifect df in H the center, and for the ellipfis... | |
 | William Emerson - 1769 - 86 pages
...line from G backward thro* A to D, and then df^s' the tranfverfe of an hyperbola. But if the point E) fall in the line RE as at E, then the line AE nowhere meets the line of meafures^ and the projection of E is at'an'infinite diftance, 'and then the... | |
 | Peter Nicholson - Mathematics - 1825 - 1046 pages
...line RE, as at G, then draw a line from G backward through A to D, and then •//'is the major axil of an hyperbola. But if the point D fall in the line RE, as at Б, then the line АБ meets the line of measures no where, and the projection of E is at an infinite... | |
 | Thomas Curtis - Aeronautics - 1829 - 804 pages
...RE, as at G, then from G draw the line GAD rf, and <f/ is the transverse axis of an hyperbola : and if the point D fall in the line RE, as at E, then the line AE will not meet the line of measures and the circle will be projected into a parabola whose vertex is... | |
 | Thomas Curtis (of Grove house sch, Islington) - 1839 - 814 pages
...RE, as at G, then from G draw the line GAD d, and df is the transverse axis of an hyperbola : and it the point D fall in the line RE, as at E, then the line AE will not meet the line of measures and the circle will be projected into a parabola whose vertex is... | |
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