Solid of Revolution generated by Circle is Sphere

Theorem

The solid of revolution formed by rotating a circle about its diameter is a sphere.

Proof

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Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): solid of revolution
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): solid of revolution