Problem 13 · 2022 Math Kangaroo
Hard
Spatial & Visual Reasoning
folding
Some artwork is drawn on a square piece of transparent foil. The foil is folded over twice, as shown in the diagram. What does the foil look like after it has been folded over twice?
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Answer: A
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Hint 1 of 2
Each fold reflects the visible marks across the fold line onto the layer below.
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Hint 2 of 2
Fold once, draw where the marks land, then fold again and combine all layers.
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Approach: reflect the marks across each fold line
- Folding flips the drawn marks across the fold crease onto the part beneath.
- Apply the first fold, record the mirrored marks, then apply the second fold and overlay everything.
- The combined picture matches option A.
- So the answer is A.
Mark:
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