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# Angle at the centre - visualisation tool
- URL: https://www.esheets.io/angle-at-the-centre/
- Published: 2025-07-13T23:17:36.000Z
- Updated: 2026-07-19T15:41:18.000Z
- Author: Richard Linnington
- Tags: Maths, Tools, Geometry and Shape

Demonstration of the circle theorem stating that "the angle at the centre is twice the angle at the circumference".

A B D C 

∠DAB = 0.0°

∠DCB = 0.0°