21. This is the familiar implicit conic section form, in this case a parabola. 22. Various parameters are associated with a conic section . 23. Are there any general rules for rotation of conic sections in the polar form? 24. Together they worked on free fall, catenary, conic section , and fluid statics. 25. In this way one may visualize 3-dimensional real quadratic forms as conic sections . 26. Hossain learnt algebra, geometry, conic section and mechanics from Mr . Jyotindranath Roy. 27. Then the intersection points of corresponding lines form a non-degenerate projective conic section . 28. These 5 items ( 2 points, 3 lines ) uniquely determine the conic section . 29. Then the lines connecting corresponding points form a dual non-degenerate projective conic section . 30. This conic section is the intersection of the cone of light rays with the flat surface.
