**Concept: The question tests on basic Geometry**

**Solution:**

By the rule of secants, which intersect externally ∠ABC=1/2(x−y) where x and y are the arc angles intercepted by the 2 secants.**Option D**

Modified on: Tue, 12 Oct, 2021 at 2:16 PM

**Concept: The question tests on basic Geometry**

**Solution:**

By the rule of secants, which intersect externally ∠ABC=1/2(x−y) where x and y are the arc angles intercepted by the 2 secants.**Option D**

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