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Olivia's Garden (Find the area of a polygon using the area of a rectangle and the area of a triangle)

Olivia is trying to determine the area of her garden. Her garden is shaped as a trapezoid, since it has 4 sides with only one pair of parallel sides. Unfortunately, Olivia doesn’t know the formula to find the area of a trapezoid. How might we divide this trapezoid into familiar shapes, such as rectangles and triangles in order to calculate its area?