Perimeter Definition
Perimeter is the distance around a two-dimensional object. You can also measure the perimeter of
three-dimensional objects like houses, stadiums, buildings and similar shapes.
Perimeter is the sum of the measure of every side of a 2D shape, or the sum of
the measure of every side of a 3D shape measuring on the ground or floor.
Round shapes (ovals, circles, ellipses and such) have perimeter, but we
almost always call that measure circumference.
Perimeter is always a linear measure. Use the same units given for each side,
like mm, foot, and so on.
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