Answer:
∠ AXC = 170°
Explanation:
Since XB bisects ∠ AXC then ∠ AXB and ∠ CXB are congruent, that is
∠ AXB = ∠ ∠ CXB = 85° and
∠ AXC = ∠ AXB + ∠ CXB = 85° + 85° = 170°
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