We consider the problem of computing a minimum perimeter triangle enclosing a convex polygon. This problem defied a linear-time solution due to the absence of a property called the interspersing property. This property was crucial in the linear-time solution for the minimum area triangle enclosing a convex polygon. We have discovered a non-trivial interspersing property for the minimum perimeter problem. This resulted in an optimal solution to the minimum perimeter triangle problem.
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