Problem 21 · 2015 Math Kangaroo
Stretch
Spatial & Visual Reasoning
path-tracing
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Answer: B
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Hint 1 of 2
Pick a point on a curve and follow it all the way around.
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Hint 2 of 2
It is a single loop only if you return to the start having traced the entire drawing.
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Approach: trace one continuous curve
- Start anywhere on a line and follow it, going straight through each crossing.
- In four of the pictures you return having drawn only part of the figure, so they are made of more than one loop.
- In picture B the single trace covers the whole drawing, so it is one large loop.
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