Technical Drawing - Exam Papers - Ordinary - 1991 - Paper 1

Question 4

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  1. In an ellipse the distance from the focus to the directrix is 40 mm and the eccentricity is 0.75.
    Draw the ellipse and construct a tangent to the curve at a point 50 mm from the directrix.
  2. Draw the triangle DEF shown below. Draw a parabola having F as its focus and having D and E as points on the curve.
    Construct a tangent to the curve at the point D.
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