1007.21 – Trace This Network

Without picking your pencil up or re-tracing any line or curve segment, trace this network. Crossing at a point is OK. Use the numbers attached to each segment to record your answer. Start anywhere.

Solution

Here is one of several solutions: 8−5−9−10−6−11−2−4−1−3−78-5-9-10-6-11-2-4-1-3-7.