In the figure, PT=4, TR=3, ST=6 and QP//ST. Find QR!
http://hk.myblog.yahoo.com/Felix-Wong9426/photo?pid=1&fid=2
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圖片
要步驟!!!!!
搵三角形ge邊~~!!!!!!!!
2007-05-21 3:07 am
回答 (3)
2007-05-21 3:14 am
✔ 最佳答案
QR/6=(3+4)/4QR/6=7/4
4QR=42
QR=10.5
2007-05-20 19:16:21 補充：
this數係用比例既原理,仲有交產相乘我自己計架,我中二
2007-05-21 3:18 am
Let x be QR,
(3+4) : 4 = x : 6
4 / 7 = 6 / x
4x = 42
x = 10.5
therefore, QR = 10.5
(3+4) : 4 = x : 6
4 / 7 = 6 / x
4x = 42
x = 10.5
therefore, QR = 10.5
2007-05-21 3:13 am
你應該係讀中3呢!!
你係數學書入面,係有一條叫做"截線定理"
只要你有PT同TR d2條邊 就可以搵到!!
你係數學書入面,係有一條叫做"截線定理"
只要你有PT同TR d2條邊 就可以搵到!!
收錄日期: 2021-04-12 20:29:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070520000051KK04533