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Parallel and Perpendicular lines
Parallel and Perpendicular lines
Video 1: http://www.showme.com/sh/?h=wnFQ7xQ
Video 2: http://www.showme.com/sh/?h=iOSh81w
Video 3: http://www.showme.com/sh/?h=Sbdtj96
Video 4: http://www.showme.com/sh/?h=hhw1tHE
Video 5: http://www.showme.com/sh/?h=Ojxmbei
Video 6: http://www.showme.com/sh/?h=2GnUqps
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