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Angle au centre/angle inscrit

Deux figures : l'une permet de conjecturer la propriété (l'angle au centre mesure deux fois la mesure de l'angle inscrit interceptant le même arc) ; l'autre servant de support à une démonstration (grâce à des triangles isocèles).

This Resource is Copied from a First-Steps Trace

Coming from trace Angle au centre? which mentioned 2 constructions.

  • Geometry system: Geolabo.
  • Country: fr
  • Educational level: 3e
  • Main topic: Angles
  • Other themestriangles isocèles, angle au centre, angle inscrit

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