 | George Russell Briggs - Geometry, Analytic - 1881 - 174 pages
...so that the difference of its distances from two fixed points in that plane is constant. A parabola is a curve generated by a point moving in a plane so that at each instant its distances from a fixed point and a fixed line in that plane are equal. These three... | |
 | William Henry Thorne - Mechanical drawing - 1890 - 76 pages
...be approximated by this method with sufficient accuracy for practical purposes. FIG. 33. A PARABOLA is a curve generated by a point moving in a plane so that its distance from a given point shall be constantly equal to Us distance from a given line. The given... | |
 | George Russell Briggs - 1890 - 170 pages
...so that the difference of its distances from two fixed points in that plane is constant. A parabola is a curve generated by a point moving in a plane so that at each instant its distances from a fixed point and a fixed line in that plane are equal. These three... | |
 | William Shaffer Hall - Geometry, Descriptive - 1902 - 160 pages
...required tangent joins the points / and c. (For proof, see "Analytical Geometry.") 21. The ellipse may be generated by a point moving in a plane, so that the sum of its distances from two given points, called foci, shall always be equal to a given line. PROB. 96.... | |
 | Charles Westinghouse - Machine design - 1906 - 168 pages
...before, thereby obtaining the elliptical arc FD. Construct opposite side in the same manner. The Parabola is a curve generated by a point moving in a plane so that its distance from a Fig. 129— The Parabola. fixed point shall be constantly equal to its distance... | |
 | Gardner Chace Anthony - Mechanical drawing - 1922 - 188 pages
...points in the required curve. In like manner obtain the opposite side. 115. The Hyperbola. — Fig. 181 is a curve generated by a point moving in a plane, so that the difference of the distances from this point to two fixed points shall be constant. It will be observed... | |
 | William Shaffer Hall - Geometry, Descriptive - 1922 - 184 pages
...required tangent joins the points t and c. (For proof, see "Analytical Geometry.") 21. The ellipse may be generated by a point moving in a plane, so that the sum of its distances from two given points, called foci, shall always be equal to a given line. PROB. 96.... | |
 | Gardner Chace Anthony - Mechanical drawing - 1922 - 188 pages
...use this method when the major axis is more than twice the minor. 112. The Parabola. — Fig. 179, is a curve generated by a point, moving in a plane so that its disFIG. 178. ELLIPSE c tance from a fixed point shall be constantly equal to its distance from... | |
 | Gardner Chace Anthony, George Francis Ashley - Geometry, Descriptive - 1926 - 266 pages
...intersecting the above lines in points which will lie on the required ellipse. 234. The Parabola, Fig. 297, is a curve generated by a point moving in a plane so that its distance from a fixed point shall be constantly equal to its distance from a given right line.... | |
 | Archie Hobson - Language Arts & Disciplines - 2004 - 474 pages
...cough elixir is a natural herbal expectorant. el*lipse |i'Hps| • n. a regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant, or resulting when a cone is cut by an oblique... | |
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... is a curve generated by a point moving in a plane so that the sum of its distances from two fixed points in that plane is constant. 