Semi-Major And Semi-Minor Axes: Term in geometry; longest and shortest semidiameters of an ellipse
In geometry, the semi-major axis is the distance from the center of an ellipse to the farthest point on the perimeter of the ellipse.
The semi-major axis is half of the major axis, which goes all the way across the ellipse at the widest part. The semi-minor axis is a line segment that is at 90 degrees with the semi-major axis. For the circle, the lengths of the semi-axes are both equal to the radius.
This article uses material from the Wikipedia Simple English article Semi-major and semi-minor axes, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). Content is available under CC BY-SA 4.0 unless otherwise noted. Images, videos and audio are available under their respective licenses.
®Wikipedia is a registered trademark of the Wiki Foundation, Inc. Wiki Simple English (DUHOCTRUNGQUOC.VN) is an independent company and has no affiliation with Wiki Foundation.