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@NCTM: What #lines do you see around you? We see lots at #NCTM. #mathphoto16 @themathforum https://t.co/Jc61xnSz1e | by tads2

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tads2

@NCTM: What #lines do you see around you? We see lots at #NCTM. #mathphoto16 @themathforum https://t.co/Jc61xnSz1e

What #lines do you see around you? We see lots at #NCTM. #mathphoto16 @themathforum t.co/Jc61xnSz1e - @NCTM

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Uploaded on June 29, 2016