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Circle Theorem: angle at the centre
Author:
Robert Chaney
Topic:
Angles
,
Circle
Move the points C and D around. What do you notice?
GeoGebra
New Resources
Poorly Drawn Parallelograms 3
Droste effect
探究由平行線和截線所成的角
What is an Isogonal Conjugate?
Construct a Conic
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testView2
notion de la dérivée en un point
Thomson Problem v3
รูปเรขาคณิต
Exploring 2 motions
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Statistical Characteristics
LCM and GCD
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Tangent Line or Tangent