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# Loci demonstration - visual tool
- URL: https://www.esheets.io/loci-demonstration/
- Published: 2025-06-20T04:31:34.000Z
- Updated: 2026-07-19T15:46:21.000Z
- Author: Richard Linnington
- Tags: Maths, Geometry and Shape, Tools

Loci are a set of points that all follow a specific rule or condition, creating a specific line, curve, or region. They usually require constructions using a pencil, ruler, and pair of compasses.

The example below demonstrates the grazing area for an animal tied to the corner of a building. Alternatively, explore [loci when a ring slides along a horizontal pole](https://www.esheets.io/loci-the-sliding-ring-problem/).

# Stanley the Sheep's Grazing Area

Stanley is tethered to the corner of a building. Drag the sheep icon to see where he can eat grass. Discover the shape of his grazing area!

Rope at full stretch!

Start Over