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Semi-major axis facts for kids

Kids Encyclopedia Facts
The semi-major axis of an ellipse.

In geometry, the term semi-major axis (also spelled out semimajor axis) is used to describe the dimensions of ellipses and hyperbolae. It is half of the major axis. The major axis is the longer one.

See also

Kids robot.svg In Spanish: Semieje mayor y semieje menor para niños

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Semi-major axis Facts for Kids. Kiddle Encyclopedia.