Question
The figure shows a piece of square paper RSTU folded at two of its corners S and U. Given that ∠TWU = 79° and ∠SVT = 74°, find ∠STU.
3 m

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The figure shows a piece of square paper RSTU folded at two of its corners S and U. Given that ∠TWU = 79° and ∠SVT = 74°, find ∠STU.