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Mathematics 7 Online
OpenStudy (anonymous):

i need an example in everyday life whose measure is 90 degree

OpenStudy (anonymous):

where walls meet

OpenStudy (anonymous):

so a corner

hero (hero):

A Desk, the corners of a sheet of paper, The corners of a ruler, The corners of a basketball court, basically, the corners of any you see that has a rectangular square or shape.

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