Lambdia

Isometry

1 article
GeometryLicenceExplication10 min

A Bug Walks Root Five Across a Cubic Room

Unfolding two faces into a 2 by 1 rectangle turns the walk into a straight segment of length root five, crossing the shared edge at half height. The reflex answer of one plus root two is the same one-parameter family evaluated at the end of that edge instead of its middle, so the trap and the answer are two points on one curve.

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