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MathNet 2018-part-07 — 177 problems (EN–VI) Question 130

Math Olympiad Vault · MathNet 2018-part-07 — 177 problems (EN–VI)

Question 130

Is it possible for the projection of the set of points $(x, y, z)$ with $0 \leq x, y, z \leq 1$ onto some two-dimensional plane to be a simple convex pentagon?