What Is Perimeter

Perimeter is the distance around a shape

Easy

Practice Overview

Description: Follow a little ant as it walks around a polygon, lighting up each side and adding its length. Discover by doing: the total distance around a closed shape is its perimeter.
Estimated Time: 10min
Tags: perimeterperimeter meaningdistance aroundpolygon sidesaround a shape
Access Level: Free

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About This Practice

Perimeter is not “how big a shape is” — it is “how far you walk around it”. Help the ant make one full lap along the sides: start on any side, then tap neighboring sides one after another, each length adding to the running sum. Complete the lap and that sum is the perimeter.

Follow a little ant as it walks around a polygon, lighting up each side and adding its length. Discover by doing: the total distance around a closed shape is its perimeter.

EasyEstimated Time: 10minperimeterperimeter meaningdistance aroundpolygon sidesaround a shape

How to Play

Tap any side to start; the ant walks it and lights it up.

Keep lighting sides adjacent to the last one, working your way around.

Watch the running equation: every walked side adds its length.

After the full lap, read the total — that is the perimeter.

Tap “New Shape” or switch difficulty for shapes with more sides.

What Is Perimeter

About This Practice

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