Question
The figure shows 4 triangles. If the sum of ∠n and ∠z is 131°, find the sum of ∠v + ∠r + ∠f + ∠c.
2 m

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The figure shows 4 triangles. If the sum of ∠n and ∠z is 131°, find the sum of ∠v + ∠r + ∠f + ∠c.