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On a coordinate plane, triangle P Q R has points (negative 8, 8), (negative 8, 4), and (10, negative 4). The coordinates of the vertices of the triangle are (–8, 8), (–8, –4), and . Consider QR the base of the triangle. The measure of the base is b = 18 units, and the measure of the height is h = units. The area of triangle PQR is square units.