You need to measure the dimensions.
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A rectangle is a parallelogram but a parallelogram need not be a rectangle and so they are not the same.
MULTIPLICATION area for a rectangle is A = L * W * H where, A = area of rectangle L = Length of rectangle W = width of rectangle H = height of rectangle The dimensions of a rectangle (L, W, and H) are interchangeable because they are being multiplied together and hence each side of the rectangle can be arbitrarily assigned to a dimension.
The perimeter of a rectangle is the sum of its 4 sides added together.
A rectangle is considered to be an irregular polygon. This is because, in a rectangle, the sides need not necessarily all be congruent, and regular polygons must have all sides be congruent.
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