Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2025-part-02 — 186 problems (EN–VI) Question 33

Math Olympiad Vault · MathNet 2025-part-02 — 186 problems (EN–VI)

Question 33

Let $ABCD$ be a square with side length $1$.

a) Prove that there is no point $M$ in the plane of the square such that the lengths of the segments $MA$, $MB$, $MC$, and $MD$ are natural numbers.

b) Find the points $M$ in space such that the lengths of the segments $MA$, $MB$, $MC$, and $MD$ are natural numbers.