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Topic: Area E2.5 – Calculating Perimeter

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Ontario Curriculum Expectation:

4.E2.5 use the row and column structure of an array to measure the areas of rectangles and to show that the area of any rectangle can be found by multiplying its side lengths.


The perimeter of a shape is the total distance around the shape.

We can use a unit grid to find the perimeter of any polygon. Each square is 1 unit by 1 unit.