Circle01.gsp

Form 4 Mathematics

Angle at centre twice angle at circumference

This is a prototype of JavaSketchpad, a World-Wide-Web component of The Geometer's Sketchpad. Copyright & copy ; 1990-1998 by Key Curriculum Press, Inc. All rights reserved. Portions of this work were funded by the National Science Foundation (awards DMI 9561674 & 9623018).

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This is a prototype of JavaSketchpad, a World-Wide-Web component of The Geometer's Sketchpad. Copyright ©1990-1998 by Key Curriculum Press, Inc. All rights reserved. Portions of this work were funded by the National Science Foundation (awards DMI 9561674 & 9623018).
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Drag points A , P and B, and observe the relationship between the above angles.

Can you make use of a property about triangles (that you learned in F.2) to prove the relationship between the above angles?

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