 | Edward Albert Bowser - Geometry, Analytic - 1880 - 334 pages
...rank next in importance and interest to the right line and circle. A Conic Section is the locus of a point moving in a plane so that its distance from a fixed point bears a constant ratio to its distance from a fixed right line. If this ratio is unity,... | |
 | George Russell Briggs - Geometry, Analytic - 1881 - 174 pages
...a plane 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... | |
 | Thomas Henry Eagles - Conic sections - 1885 - 404 pages
...consideration of them as lying on the surface of a solid, each will at first be defined as the locus of a point moving in a plane so that its distance from a fixed point is always in a constant ratio to its distance from a fixed line, both point and line being... | |
 | George Russell Briggs - 1890 - 170 pages
...a plane 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
...Given the length ab, or major axis, and width de, or minor axis, to construct an ELLIPSE. An Ellipse is a curve generated by a point moving in a plane so that the sum of the distances of this moving point from two fixed points shall be. constantly equal. To... | |
 | Charles Westinghouse - Machine design - 1906 - 168 pages
...Other points on the diameters ER and T may be obtained by perpendiculars as indicated. The Ellipse is a curve generated by a point moving in a plane so that the sum of the distances Fig. 126— The Ellipse— 1. from this point to two fixed points shall be... | |
 | James David Phillips, Adam Vause Millar - Geometry, Descriptive - 1908 - 116 pages
...The simplest plane curves are the circle, ellipse, parabola and hyperbola. A Circle is the path of a point moving in a plane so that its distance from a given point is constant. 82. An ellipse is the path of a point moving in a plane so that the sum of its distances... | |
 | James David Phillips, Adam Vause Millar - Geometry, Descriptive - 1909 - 122 pages
...Co-ordinate Geometry, Art. 108B.) This method applies to all conies. 74. A parabola is the path of a point moving in a plane so that its distance from a given point is always equal to its distance from a given straight line. Construction. Let F, Fig. 48, be the fixed... | |
 | Albert Ensign Church, George Miller Bartlett - Geometry, Descriptive - 1911 - 300 pages
...STj and ST2 are the required tangents. 68. A parabola may be generated by a point moving in the same plane, so that its distance from a given point shall be constantly equal to its distance from a given straight line. The given point is the focus, the given straight line the directrix. If through the... | |
 | Adam Vause Millar, Edward Silver Maclin - Geometry, Descriptive - 1913 - 152 pages
...Co-ordinate Geometry, Art. 108B.) This method applies to all conies. 89. A parabola is the path of a point moving in a plane so that its distance from a given point is always equal to its distance from a given straight line. FIG. 55. — Parabola and tangents. Construction.... | |
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A circle is the path of a point moving in a plane so that its distance from a given point is constant. 
