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OpenStudy (anonymous):
PLEASE HELP WITH THIS VECTORS PROBLEM! The points P(-2 , 1), Q(-6 , 4), R(4 , 3), S(8 , 0) are four vertices of parallelogram PQRS. a) Find the measures of internal angles of the parallelogram, to the nearest degree. I found Q and S to be 31.16 degrees and P and R to be 148.84 degrees b) Find the measures of the angle between diagonals of the parallelogram to the nearest degree. Please show all work, thanks (:
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