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In circle C, mDE = 84°. Find each measure.

1. measure of angle EFD​

In Circle C MDE 84 Find Each Measure1 Measure Of Angle EFD class=

Answer :

Answer: 42 degrees

Reason:

Use the inscribed angle theorem. Central angle DCE subtends the arc DE, so angle DCE = 84 degrees. Inscribed angle EFD is also subtending this same arc (DE), meaning we cut the arc/central angle measure in half to get 84/2 = 42.

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