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perpendicularness
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Explain “perpendicularness” in the fence-post example and show how “perpendicular” becomes a noun with “-ness.”
Compare “perpendicularness,” “perpendicularity,” and “orthogonality,” including which sounds most natural in everyday English.
Suggest more natural ways to express “the perpendicularness of the fence posts” in this sentence.
Give five B2-level examples with “perpendicular” or its noun forms, with Russian translations.
Show common collocations for “perpendicular” and explain which preposition it takes.
Rewrite the example sentence using “perpendicularity” and explain whether the meaning or tone changes.
Quiz me with three questions about the meaning and use of “perpendicularness.”
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