Question
The figure shows 4 triangles. If the sum of ∠p and ∠s is 113°, find the sum of ∠b + ∠r + ∠z + ∠i.
2 m

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The figure shows 4 triangles. If the sum of ∠p and ∠s is 113°, find the sum of ∠b + ∠r + ∠z + ∠i.