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2021 Math Kangaroo

Problem 14

Problem 14 · 2021 Math Kangaroo Hard
Spatial & Visual Reasoning tiling-tessellation

Which figure can be made from the 2 pieces shown on the right?

Figure for Math Kangaroo 2021 Problem 14
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Answer: A
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Hint 1 of 3
Imagine sliding the two pieces together like puzzle pieces.
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Hint 2 of 3
Their little pictures (the circles, diamonds and plus signs) must line up.
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Hint 3 of 3
Find the answer where every symbol lands in exactly the right square.
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Approach: fit the two pieces together
  1. Slide the two pieces next to each other so their squares make one full picture.
  2. Check that every little symbol ends up in the right spot.
  3. Only option A matches the picture the two pieces make.
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