 | George Russell Briggs - 1881 - 174 стор.
...fixed point with a fixed straight line. CHAPTER VII. THE CONIC SECTIONS. 59. An ellipse 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. An hyperbola is a curve generated by a point moving in a plane... | |
 | George Russell Briggs - 1890 - 170 стор.
...fixed point with a fixed straight line. CHAPTER VII. THE CONIC SECTIONS. 59. An ellipse 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. An hyperbola is a curve generated by a point moving in a plane... | |
 | William Henry Thorne - 1890 - 76 стор.
...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 understand... | |
 | Gardner Chace Anthony - 1894 - 190 стор.
...equal circles tangent to each other and the given circle. THE ELLIPSE. PLATE 8. The Ellipse is a curve generated by a point moving in a plane so that the sum of the distances from this point to the two fixed points shall always be constant. The fixed points, E... | |
 | George Albert Wentworth - 1899 - 248 стор.
...are similar. THE ELLIPSE. 896. DBF. An ellipse is a curve which, is the locus of a point that moves in a plane so that the sum of its distances from two fixed points in the plane is constant. 897. DKF. The fixed points are called the foci, and the straight... | |
 | George Albert Wentworth - 1899 - 498 стор.
...are similar. THE ELLIPSE. 896. DBF. An ellipse is a curve which is the locus of a point that moves in a plane so that the sum of its distances from two fixed points in the plane is constant. 897. DBF. The fixed points are called the foci, and the straight... | |
 | William Shaffer Hall - 1902 - 160 стор.
.../>„ tangent to this circle will be normal to the curve at /3. 31. The sinusoid is a plane curve which may be generated by a point moving in a plane, so that in any position its distance from a given right line is equal to the sine of an arc, which is proportional... | |
 | George Albert Wentworth - 1902 - 246 стор.
...are similar. THE ELLIPSE. 896. DBF. An ellipse is a curve which is the locus of a point that moves in a plane so that the sum of its distances from two fixed points in the plane is constant. 897. DEF. The fixed points are called the foci, and the straight... | |
 | George Albert Wentworth - 1904 - 496 стор.
...are similar. THE ELLIPSE. 896. DEF. An ellipse is a curve which is the locus of a point that moves in a plane so that the sum of its distances from two fixed points in the plane is constant. 897. DEF. The fixed points are called the foci, and the straight... | |
 | Charles Westinghouse - 1906 - 168 стор.
...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 constant.... | |
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An ellipse is a curve which is the locus of a point that moves in a plane so that the sum of its distances from two fixed points in the plane is constant. 
