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Answer:

What was the question (I can't see the picture)

Step-by-step explanation:

marcthemathtutor

Answer:

B. 180 degrees

Step-by-step explanation:

∠A, ∠B and ∠C are collective the internal angles of a triangle.

By definition, the internal angles of a triangle sum to 180degrees

hence ∠A + ∠B + ∠C = 180 degrees

(see also attached graphic for reference)

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