Question 1126779
slope of AB
{{{ ( 6 - 1 ) / ( 0 - 2 )  = -5/2 }}}
slope of BC
{{{ ( 3 - 1 ) / ( 7 - 2 ) = 2/5 }}}
slope of CD
{{{ ( 8 - 3 ) / ( 5 - 7 ) = -5/2 }}}
slope of AD
{{{ ( 8 - 6 ) / ( 5 - 0 ) = 2/5 }}}
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AB is parallel to CD ( same slope )
BC is parallel to AD ( same slope )
Opposite sides have same slope