square annulus
(idiomatic) To imagine that one hears sounds that are not actually real; to have auditory hallucinations. / Used other than figuratively or idiomatically: see hear, thing.
the region enclosed by two concentric squares with parallel sides
present participle of Bangalore
A traditional Bhutanese darts game.
二つの同心で辺が平行な正方形に挟まれた環状領域の面積を求めるには、内側の正方形の面積を外側の正方形の面積から引けばよい。
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DiQt
Free
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