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boyakko [2]
3 years ago
10

In the diagram, line A F is a side of regular hexagon ABCDEF inscribed in circle O. what is mFDA? 

Mathematics
1 answer:
alekssr [168]3 years ago
5 0
Since it is a regular hexagon, all 6 sides are the same length.  That means that the 6 vertices divide the circle into 6 equal arcs.  360/6 = 60° for each arc.  The arch between A and F is an intercepted arc for ∠FDA, and we know that inscribed angles are 1/2 of the measure of the intercepted arc. Since the arc measures 60°, that means that the angle would be 30°.
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