To find the area of parallelogram rstu, juan starts by drawing a rectangle around it. each vertex of parallelogram rstu is on a side of the rectangle he draws. on a coordinate plane, parallelogram r s t u has points (negative 4, negative 3,) (negative 5, 1), (4, 3), and (5, negative 1). which expression can be subtracted from the area of the rectangle to find the area of parallelogram rstu? 2 (18 + 4) one-half (18 + 4) (18 + 4) (18 - 4)