Conics

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Across
  1. 3. line perpendicular to the transverse axis and passes through the center of a hyperbola
  2. 6. a degenerate case where two generators have the vertex as their intersection
  3. 8. generated by the intersection of a plane with a cone
  4. 9. is the set of all points in a plane the difference of whose distance from 2 points is constant
  5. 11. the chord with endpoints on the parabola and perpendicular to the axis of symmetry
  6. 13. line through focus and vertex of a parabola
  7. 14. student
  8. 17. center of a circle
  9. 19. set of points in a plane equidistant from a fixed point and fixed line.
  10. 20. another name for Generator
  11. 22. indicator of how much a conic section differs from a circle
  12. 23. two intersecting lines that the branches of a hyperbola seem to be approaching.
  13. 24. set of points on a plane whose sum of distance from 2 fixed points is constant
  14. 26. the segment from one co-vertex to the other co-vertex of an ellipse
  15. 27. line segment joining the two vertices of a hyperbola
Down
  1. 1. when the plane intersects the vertex of the cone
  2. 2. set of points equidistant from a fixed point
  3. 4. a degenerate case that is basically one generator
  4. 5. the line through the foci of an ellipse
  5. 7. this is what you call any line lying on the cone
  6. 10. teacher
  7. 12. the segment from one vertex to the other vertex of an ellipse
  8. 15. a degenerate case where the only intersection between the cone and the plane is the vertex
  9. 16. x^2 + y^2 + Dx + Ey + F= 0 is the _______ of an equation of the circle
  10. 18. the fixed line in the parabola question in this crossword
  11. 21. one of these is what most people refer to as a 'cone'
  12. 25. the fixed point in the parabola question of this crossword