Page 37 - ENGINEERING DRAWING
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                   b.  Construct an ellipse using concentric circle method





















               Steps:

                   1.   Draw both axes as perpendicular bisectors of each other and name their ends as
                       shown.
                   2.  Taking their intersecting point as a center, draw two concentric circles considering
                       both as respective diameters.

                   3.  Divide both circles into 12 equal parts and name them as shown.
                   4.  From all points of the outer circle draw vertical lines downwards and upwards
                       respectively.
                   5.  From all points of the inner circle draw horizontal lines to intersect those vertical
                       lines.
                   6.  Mark all intersecting points properly as those are the points on the ellipse.
                   7.  Join all these points along with the ends of both axes in a smooth possible curve.  It
                       is required ellipse.
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