Question

what is $m\angle edf$?
$m\angle edf = \square^\circ$
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Explanation:

Step1: Sum known central angles

$130^\circ + 60^\circ + 70^\circ = 260^\circ$

Step2: Subtract from full circle ($360^\circ$)

$m\angle EDF = 360^\circ - 260^\circ$

Answer:

$100$