Question

A square sheet is folded to a triangle (steps shown) and a small corner is cut off. Which option shows the correct pattern after {unfolding?}

• A. A
• B. B
• C. C
• D. D

Hint:

For paper-fold cuts, mirror the cut across each fold to predict all duplicates; a corner cut on a doubly folded sheet maps to all four corners after unfolding.

Answer 1

The Correct Option is A

The sheet is folded twice to form a right triangle; the cut is made at the triangle’s single exposed corner that corresponds to the original square’s corner stack.
Unfolding mirrors the cut across both fold lines, creating four identical cuts at the four corners of the square.
Option (A) shows four small identical corner notches; the other options place the cut(s) inside the square, which is impossible from this fold.
Therefore the correct result is \(\boxed{\text{(A)}}\).