find the area of the quadrilateral with vertices (9,-2), (0,2), (2,7), (6,10)

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Sometimes it's helpful to draw the quadrilateral on a sheet of graph paper so that you have a visual concept of what you're looking at (and, therefore, which area formula to apply).Once you've drawn this one you might want to separate it into triangles and then calculate the area of each triangle. The length of the lines that join the vertices function as the length of the shape's sides.