Abstract
We can create an elliptical curve by intersecting a plane with a cylinder at an angle. A circle is an ellipse whose major and minor axes are identical. This study aimed to investigate the relationship between the ellipse and the sine wave curve using a cylinder section. The study found that we can derive the formula for a sine wave curve from the cylinder section, the ellipse formula can come from the sine wave curve formula, and both the sine wave curve and the ellipse have the same perimeter.