Problem 5 · 2021 Math Kangaroo
Easy
Spatial & Visual Reasoning
reflection
Ella puts on this t-shirt and stands in front of a mirror. Which of these images does she see in the mirror?
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Answer: A
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Hint 1 of 3
A mirror swaps left and right, but keeps top and bottom the same.
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Hint 2 of 3
So the picture on the shirt gets flipped over sideways.
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Hint 3 of 3
Pick the option that is Ella's shirt flipped left-to-right.
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Approach: flip the picture left-to-right
- A mirror does not turn things upside down; it only swaps left and right.
- So whatever is on the left of Ella's shirt shows up on the right in the mirror.
- Flipping the shirt sideways matches option A, so Ella sees image A.
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