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HMMT 二月 2007 · GEN2 赛 · 第 10 题

HMMT February 2007 — GEN2 Round — Problem 10

专题
Contest Math / 竞赛数学
难度
L3
来源
HMMT

题目详情

英文原题

  1. [ 7 ] ABCD is a convex quadrilateral such that AB = 2 , BC = 3 , CD = 7, and AD = 6. It also has anincircle. Given that ∠ ABC is right, determine the radius of this incircle. 1
解析

英文解析

  1. [ 7 ] ABCD is a convex quadrilateral such that AB = 2 , BC = 3 , CD = 7, and AD = 6. It also has anincircle. Given that ∠ ABC is right, determine the radius of this incircle.
    √
    1 + 13
    Answer: . Same as Geometry #10.
    23