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@Pierre_Tranche: This sun dial is interesting is so many ways! Hour lines, sightline to Polaris... Pembroke, ON #lines #mathphoto16 https://t.co/4xbsklFhgW | by tads2

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tads2

@Pierre_Tranche: This sun dial is interesting is so many ways! Hour lines, sightline to Polaris... Pembroke, ON #lines #mathphoto16 https://t.co/4xbsklFhgW

This sun dial is interesting is so many ways! Hour lines, sightline to Polaris... Pembroke, ON #lines #mathphoto16 t.co/4xbsklFhgW - @Pierre_Tranche

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Uploaded on June 28, 2016