In Assembling Objects, why can the correct answer look different at first glance from the original pieces?

In Assembling Objects, the shapes in the answer choices are often rotated (turned to a different angle) or moved to new positions, so the correct answer can look different at first even though the pieces are unchanged in size and shape. Rotation does not alter a shape's actual dimensions or its connection points — a triangle turned 90 degrees is still the same triangle. The skill being tested is mentally rotating shapes to recognize them in new orientations. Don't reject a correct answer just because a piece is turned; instead, confirm that its size, shape, and key points still match.