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Calculus1 7 Online
OpenStudy (anonymous):

The points P(-2,1), Q(-6,4), and R(4,3) are three vertices of a parallelogram PQRS. a) find the coordinates of s = (0,6) b) find the measures of the internal angles of the parallelogram. to the nearest degree c) find the measure of the angle between diagonals of the parallelogram to the nearest degree

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