Technical Graphics - Exam Papers - HL - 2004

The figure shows a design for a monument.
A pictorial sketch of the monument is also shown.
The curve ABC is a parabola with vertex B.
The curve PQRST is a semi-ellipse with minor axis 80. Normals to the elliptical curve are drawn at points Q and S.
Draw the given design.

Show clearly the constructions necessary to determine the major axis of the ellipse and the normals at Q and S.

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