Ellipse drawing method and ellipse perimeter calculation method
An ellipse and perimeter technology, applied in the field of drawing method and its perimeter calculation, can solve the problems of other obstacles in the space, large engineering volume, small operating space, etc., and achieve the effect of facilitating later construction needs
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[0018] see figure 1 As shown, draw an ellipse according to the given semi-major axis length a and minor semi-axis length b:
[0019] Step 1. Calculate the long side 2e of the inscribed rectangle of the ellipse. The endpoints of the long sides of the inscribed rectangle are A and B respectively. The length of the line segment AB is 2e. Make the perpendicular line CD of the line segment AB. The line segment AB intersects with the line CD at E point;
[0020] Step 2, calculate the radius R of the great arc of the ellipse, Take A or B as the center and R as the radius to make an arc, intersect the straight line CD at point D, take D as the center and R as the radius to make an arc, and intersect the line segment AB at points A and B respectively, and the arc AB Intersect with line CD at point C;
[0021] Step 3, calculate the distance h between the highest point of the arc AB and the line segment AB, Take point C as the center, draw an arc with the length of the semi-minor a...
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