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Across 4. the center line of a cone 6. when a cutting plane intersects a right circular cone (2 Words) 7. right angles to the tangent 9. touches but does not intersect 12. cutting plane is parallel to one side of the conical surface 13. the line (g) that rotates around (v) 14. vertex 15. successive positions of the generator

Down 1. the cutting plane is on the axis (2 Words) 2. the ratio of the points on a curve to the directrix 3. cutting plane passes through both slant sides at a right angle to the axis 5. when a plane cuts all the elements on one side of the apex but is not at right angles to the axis 8. the cutting plane is parallel to the axis 10. two dimensional representation of the upper and lower portion of the cone 11. two points on the major axis that is half of the major axis