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Perpendicular from centre to chord bisects chord

Author:
Norhuda Mohd Sadekan
Red dot P for adjusting the length of OP: 1. Pre-requisite knowledge and terms: Perpendicular bisector, Chord Task: Manipulate the given applet. What is the measure of angle OPA for the lengths AP and PB to be equal? Can you get AP = PB when angle is 60 degrees?

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