How to Draw ellipse by rectangle method

Draw Ellipse by Rectangle Method

The Video shows the step by step method to draw ellipse by Rectangle method.

Steps to draw ellipse of major axis 100 mm and minor axis 70 mm by rectangle method

1. Draw rectangle of 100 mm x 70 mm and mark it as PQRS

2. Draw 2 axis lines at the centre and mark the intersection points as ABCD

2.  To draw curve in the left top quarter of the rectangle
Divide the line AQ into 4 equal parts and mark it as 1,2,3 & 4
3.  Divide the line AO onto 4 equal parts and mark it as 1', 2', 3' & 4'
4.  From the point C, draw lines C1, C2, and C3.
5.  From point D, draw line through points 1' till it meet the line C1 and mark this intersecting point as P1.
6.   From point D, draw line through points 2' till it meet the line C2 and mark this intersecting point as P2.
7.  Repeat this procedure for C3 and mark the point P3.
8.  Now draw the quarter of the ellipse by joining the points A, P1, P2, P3 and D.
9.  Repeat this procedure in the other quarters of the rectangle to complete the ellipse.