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Draw an ellipse by general method, given distance of focus from directrix 65mm and eccentricity ¾. A. 1’. E. C. F. 1. V. B. Given CF=65mm. Given, eccentricity=3/4. Therefore divide CF in 7 equal parts and mark V at 3rd division from F. Laxmi Institute of Technology, sarigam. PROBLEM
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Draw an ellipse by general method, given distance of focus from directrix 65mm and eccentricity ¾. A 1’ E C F 1 V B Given CF=65mm Given, eccentricity=3/4. Therefore divide CF in 7 equal parts and mark V at 3rd division from F Laxmi Institute of Technology, sarigam
PROBLEM A regular hexagon of 40mm side has a corner in the HP. Its surface inclined at45° to the HP and the top view of the diagonal through the corner which is in the HP makes an angle of 60° with the VP. Draw its projections. Top view of the diagonal making 60° with the VP. Plane inclined to HP at 45°and ┴ to VP Plane parallel to HP d’ d1’ c’ e’ c1’ e1’ b’ f’ b1’ f1’ b’ f’ c’ e’ a’ Y X a’ 45° a1’ d’ 60° f1 a1 f1 e1 f e e1 b1 a d d1 a1 d1 c1 b c b1 c1
3 4 2 P3 5 P4 3’ 4’ 1 2’ P2 P5 5’ 1’ P1 P6 6’ 12 6 P12 12’ 7’ 11’ P7 P11 8’ 10’ 7 9’ P8 P10 11 P9 8 10 9
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. The distance between fixed point and the fixed line is 65 mm. A 1’ E 2’ 3’ 4’ F C D 1 2 3 4 B
