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HMMT 二月 2001 · 冲刺赛 · 第 24 题

HMMT February 2001 — Guts Round — Problem 24

专题
Contest Math / 竞赛数学
难度
L3
来源
HMMT

题目详情

英文原题

  1. [6] Square ABCD has side length 1. A dilation is performed about point A , creating
    ′ ′ ′ ′ ′
    square AB C D . If BC = 29, determine the area of triangle BDC .
解析

英文解析

  1. [6] Square ABCD has side length 1. A dilation is performed about point A , creating
    ′ ′ ′ ′ ′
    square AB C D . If BC = 29, determine the area of triangle BDC .
    ( )
    1 29 1
    Solution: 29 − 2 · (29) − = 420 .2
    2 2 2 4