Ellipse by gen method(thedirectdata.com)

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Ellipse by gen method(thedirectdata.com)

  1. 1. Draw an ellipse by general method, given distance of focus fromdirectrix 65mm and eccentricity ¾. A 1’ E C F V 1 B Given CF=65mm Given, eccentricity=3/4. Therefore divide CF in 7 equal parts and mark V at 3rd division from F
  2. 2. PROBLEMA regular hexagon of 40mm side has a corner in the HP.Its surface inclined at45 to the HP and the top view ofthe diagonal through the corner which is in the HPmakes an angle of 60° with the VP. Draw its projections. Top view of the diagonal Plane inclined to HP making 60 with the VP. Plane parallel to HP at 45 and ┴ to VP d1’ c1’ e1’ b1’ f1’ b’ c’X a’ f’ e’ d’ 45 a1’ Y 60° f1 f1 e1 a1 f e e1 b1 a d d1 a1 d1 c 1 b c b1 c1
  3. 3. 3 4 2 P3 P4 5 3’ 4’ 1 P2 2’ P5 5’ 1’ P1 6’ P6P12 12 6 12’ 7’ 11’ P7 P11 8’ 10’ 7 9’ P8 P10 11 P9 8 10 9
  4. 4. PROBLEM: A point moves in a plane in such a way that its distance from a fixed point is equal to its distance from a fixed line. Thedistance between fixed point and the fixed line is 65 mm. A 1’ E 2’ 3’ 4’ F C D 1 2 3 4 B

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