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HMMT 二月 2007 · GEN2 赛 · 第 10 题

HMMT February 2007 — GEN2 Round — Problem 10

专题
Discrete Math / 离散数学
难度
L3
来源
HMMT

题目详情

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