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## Main Question or Discussion Point

I have read a statement at a physics forum:

the net angular momentum about any point (or axis)

is the sum of the momentum about center of mass plus the momentum that center of mass about the point (or axis).

It sound familiar to Parallel-Axis theorem but I'm not sure it's right or wrong.

Would someone help me to prove it by mathematical approach?

Thanks very much!!

(Please forgive me that my English isn't very good)

the net angular momentum about any point (or axis)

is the sum of the momentum about center of mass plus the momentum that center of mass about the point (or axis).

It sound familiar to Parallel-Axis theorem but I'm not sure it's right or wrong.

Would someone help me to prove it by mathematical approach?

Thanks very much!!

(Please forgive me that my English isn't very good)