7. Ellipses

7.1 Construction by circle projection

Data :

• a circumscribed circle with center O and radius 2b (major axis) ;

• an inscribed circle with center O and radius 2a (minor axis).

Plot: each point of the ellipse is constructed by taking a radius [OA _1] , [OA _2] , [OA _3], ... which intersects the inscribed circle at C ₁ , C ₂ , C ₃ , .... from these points are drawn a parallel to the major and...