http://a367.yahoofs.com/hkblog/rDkOb8SWERnmmaR4UeTpiIbmgvVT_2/blog/20110528074302305.jpg?ib_____DoafPVYFm
這題我用了三角形外角和都求證不到,到底怎樣?
數學問題:求證三角形.....
2011-05-29 3:24 am
回答 (1)
2011-05-29 3:35 am
✔ 最佳答案
ㄥCAB + ㄥABC = ㄥBCEq + 2p = y + y ......(1);ㄥECD + ㄥCDE = ㄥDEF
y + q = x
y = x - q ......(2)代 (2) 入 (1) :q + 2p = y + (x - q)x + y = 2(p + q)
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110528000051KK01027