Question
The figure shows a piece of rectangular paper DEFG folded at one of its corners D. ∠DHE is 2 times as large as ∠DHJ. Find ∠DHE.
3 m

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The figure shows a piece of rectangular paper DEFG folded at one of its corners D. ∠DHE is 2 times as large as ∠DHJ. Find ∠DHE.