PUMaC 2008 · 几何（A 组） · 第 7 题

PUMaC 2008 — Geometry (Division A) — Problem 7

(5 points) Let H be the region of points ( x, y ), such that (1 , 0), ( x, y ), ( − x, y ), and ( − 1 , 0) form an isosceles trapezoid whose legs are shorter than the base between ( x, y ) and ( − x, y ). Find the least possible positive slope that a line could have without intersecting H . √

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