作者pidong (你一直都懂，不是嗎？)
看板GMAT
標題[問題] 三角形如何從題目中判斷
時間Tue Aug 16 16:49:18 2016
Q:
In triangle ABC, point X is the midpoint of side AC and point Y is the midpoint
of side BC. If point R is the midpoint of line segment XC and if point S is the
midpoint of line segment YC, what is the area of triangular region RCS?
(1) The area of triangular region ABX is 32.
(2) The length of one of the altitudes of triangle ABC is 8.
答案是Ａ
但是我隨便畫一個三角形 怎麼知道Ａ要怎麼求呢？
謝謝
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 1.173.101.15
※ 文章網址: https://webptt.com/m.aspx?n=bbs/GMAT/M.1471337361.A.A52.html
1F：推 demonhom: (1)可推出ABC面積，進而可推出CXS面積 08/16 18:55
2F：→ demonhom: 更正CRS 08/16 18:56