1. Polygon Areas 1 The area of a rectangle Tandi Clausen-May
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2. Click the mouse only when you see
If you click too soon you will miss the best bits.
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3. The area
of a rectangle
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4. We can fill the rectangle with squares.
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5. We can measure the area in square units.4 3
We can measure the area in square units.
3 rows of 4
12 square units 5 7 6 7½
6 rows of 7½
7 rows of 5
45 square units
35 square units
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6. Summary Area of a Rectangle = number in a row × number of rows
height
Area of a Rectangle
base
= number in a row × number of rows
= length of a row × number of rows
= base × height
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7. The area of a parallelogram and a triangle
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Polygon Areas 2
The area of a parallelogram and a triangle
Tandi Clausen-May