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MathNet 2022-part-02 — 197 problems (EN–VI) Question 56

Math Olympiad Vault · MathNet 2022-part-02 — 197 problems (EN–VI)

Question 56

A triangle with perimeter $P$ is divided into $k$ triangular pieces for some $k \ge 2$.

a. Show that there exists a piece with perimeter greater than $\frac{P}{k}$.

b. Show that if the initial triangle is equilateral, then there exists a piece with perimeter at least $\frac{P}{\sqrt{k}}$.