To measure the length of a segment, you use a unit length such as an inch, a centimeter, or a foot, and you see how many times it goes into the segment you are measuring. To measure an area, you use a square unit, such as a square inch, a square centimeter, or a square foot, and see how many times it goes into the area you are measuring.
The unit square fits into the rectangle shown here 15 times, so its area is 15. How can you find the area of any rectangle? In the applet below, the dimensions and area of a rectangle are given. How do you use the dimensions to find the area?
Area of a Rectangle = Base × Height
Use what you know about the area of a rectangle to find the Area of a Parallelogram.
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