Question
The figure shows 4 triangles. If the sum of ∠v and ∠r is 129° , find the sum of ∠i + ∠d + ∠c + ∠y.
2 m

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The figure shows 4 triangles. If the sum of ∠v and ∠r is 129° , find the sum of ∠i + ∠d + ∠c + ∠y.