請依下圖列出所有步驟及理據(如:int. angles, PQ//SR)等
題目可能包含mid-point theorem或intercept theorem
圖:http://i246.photobucket.com/albums/gg119/FFS12/ABC1-1.jpg
英文四邊形數學題15(10分)
2009-02-05 1:39 am
回答 (1)
2009-02-05 2:13 am
✔ 最佳答案
According to the Mid-point theorem:PQ/PR = PT/PS = QT/RS = 1/2
k/10 = 1/2
2k = 10
k = 5
Also, from the Mid-point theorem:
** triangle PQT ~ triangle PRS
** QT // RS
So: <m = <PTQ ( alt angles, QT//RS )
<PTQ = 180 - 105 - 40 ( angles sum of triangle PQT )
<PTQ = 35
So: <m = 35
參考: myself.. 嚴禁抄襲!!
收錄日期: 2021-04-23 20:14:54
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090204000051KK01508