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Technical Drawing  Exam Papers  Ordinary  1999  Paper 1Question 6(a) In a parabola the distance from the focus to the vertex is 20 mm. Draw a portion of the parabola. (b) In Fig. 6 the line DD is the directrix of an ellipse and the line AB is the direction of the axis. The eccentricity of the ellipse is 0.7 and P is a point on the curve. Show how the position of the focus is determined and draw a portion of the curve. 


