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12.9 Angles Outside Circles
Author:
Daniel Ethier
Drag points C, E, F, and G to change arcs CE and FG. Drag point D to change the angle.
GeoGebra
As you change the angle and the arcs, how is the measure of angle D related to the difference between the measures of arcs CE and FG?
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مقدار الزاوية المركزية مساوٍ لضعف مقدار الزاوية المحيطية الت
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