noun
BAD : I have written my address on the top right-hand corner.
GOOD : I have written my address in the top right-hand corner.
BAD : I'd rather sit on the corner, near the door.
GOOD : I'd rather sit in the corner, near the door.
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in the corner of an area or room (NOT on or at ): 'I suggest that we put the piano in the corner where it won't get in the way.'
Compare: 'The bank is on the corner, next to the launderette.' 'I'll meet you at the corner in half an hour.'