Please refer to it, hehe ~ ~ ~

[Problem solving process]

① Fold the square paper in half and unfold it, and set the crease as Mn;

(2) superposing point B on the polyline to obtain Rt△AGE；;

③ Fold along the EG paper and get that △EAF is an equilateral triangle?

Opposite width

What does the picture do? Come out and see?

Upload, etc.