MathBrush

Folding angle — find x

Gizelle has a rectangular piece of paper. She folded it along the dotted line (the diagonal, from the top-left corner to the bottom-right corner) as shown. At the bottom-right corner, the angle between the right-hand edge of the paper and the folded-over edge is 38 degrees, and x is the angle between that folded edge and the crease. Find angle x.

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