Google Classroom
GeoGebraGeoGebra Classroom

CT1: Angle at the centre is double the angle at the edge

Author:
chriseda
Topic:
Circle
Move any of the points around the edge to see the angles change. The angle at the centre should always be double the angle at the edge (rounding to nearest integer may make it seem this is not the always the case, but that's just a rounding error)