"Stereometrical" is a word in ENGLISH

stereometrical ENGLISH
Definition:

Of or pertaining to stereometry; performed or
obtained by stereometry.

Few words of positivity

Put your ear down close to your soul and listen hard.

Anne Sexton

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Laugh your heart out.

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planimetry ENGLISH

The mensuration of plane surfaces; -- distinguished from stereometry, or the mensuration of volumes.

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stereometry ENGLISH

The art of measuring and computing the cubical contents of bodies and figures; -- distinguished from planimetry.

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