Perimeter is the distance around something. In the case of a polygon, you add up the lengths of all the sides.
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There is no rule for the perimeter of an acute triangle. You simply need to add the sides.
area of parallelogram= base*height perimeter= 2(length+breadth)
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s=side length P=perimeter P=4s
The perimeter of a triangle is equal to the length of its three sides added together. If you do not know the lengths of the sides, there are many different mathematical techniques for discovering them.