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File:Herzkurve2.svg · Wikimedia Commons · See Wikimedia Commons

EntityQ28474· pop 84· linked from 229 articles

Also known as circumference, perimeter length, length of perimeter

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Perimeter is the distance around the outside edge of a flat, two-dimensional shape, measured by adding up the lengths of all its sides. It matters because it helps us figure out how much material we'd need to go around something (like fencing for a yard) or understand the size of a shape's boundary.

AI-generated from the Wikipedia summary — may contain errors.

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