Question
A rectangular piece of paper is folded along the diagonal as shown in Figure P. It is folded again as shown in Figure Q before the last fold in Figure R. If the angle is 60° in Figure R, what is ∠s?
3 m

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A rectangular piece of paper is folded along the diagonal as shown in Figure P. It is folded again as shown in Figure Q before the last fold in Figure R. If the angle is 60° in Figure R, what is ∠s?