Question

A parallelogram whose vertices have coordinates r(1, -1), s(6, 1), t(8, 5), and u(3, 3) has a shorter diagonal of ___ .

Answer 1

A shorter diagonal of a parallelogram PSTU is US.
d ( US ) =
`\sqrt{( 6-3 ) ^(2) + ( 1-3 )^(2) } = √(9 + 4)= √(13)`
d ( US ) = 3.60555