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 ___ .
Just need a check i think sqrt13

5
√(13)
√(97)

Answer 1

one moment. I'm using geogebra to check

Answer 2

http://prntscr.com/b9bwez

the green segment f is the shorter diagonal

f = 3.61 approx
f^2 = 13.0321 approx

turns out that f^2 is exactly equal to 13 if there's no rounding error

so f = sqrt(13) exactly

which means you have the correct answer. Nice job

Answer 3

thxs

Answer 4

no problem