Question
The figure shows a piece of square paper ABCD folded at two of its corners A and C. ∠AED is 4 times as large as ∠ADE and ∠CDF is 7° smaller than ∠ADE. Find ∠ADC.
4 m

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The figure shows a piece of square paper ABCD folded at two of its corners A and C. ∠AED is 4 times as large as ∠ADE and ∠CDF is 7° smaller than ∠ADE. Find ∠ADC.