中二數學的與線及直線圖形有關的角的問題！(急!!!)

👨🏻‍🏫 學術台數學

月月

2009-12-28 10:57 pm

http://hiphotos.baidu.com/%B2%BB%B6%FE%D5%E6%C3%C0/pic/item/fc268a102d2ca320b8127b04.jpg

我唔識做！

更新1:

http://hiphotos.baidu.com/%B2%BB%B6%FE%D5%E6%C3%C0/pic/item/fc268a102d2ca320b8127b04.jpg

更新2:

http://hi.baidu.com/%B2%BB%B6%FE%D5%E6%C3%C0/album/item/68f4ccd51a846131a08bb736.html 這個

更新3:

http://hi.baidu.com/%B2%BB%B6%FE%D5%E6%C3%C0/album/item/97df8bbe5369683a18d81fc5.html http://hi.baidu.com/%B2%BB%B6%FE%D5%E6%C3%C0/album/item/97df8bbe5369683a18d81fc5.html#IMG=8b96358a1c2c5022c8fc7a91 這兩題我都唔識做！請各位幫幫忙！！

回答 (3)

匿名

2009-12-29 3:16 am

✔ 最佳答案

http://hiphotos.baidu.com/%B2%BB%B6%FE%D5%E6%C3%C0/pic/item/fc268a102d2ca320b8127b04.jpg

2009-12-28 17:30:22 補充：
都係開唔到= =~~

2009-12-28 19:16:49 補充：
AD=DB(Given)
k = <DBA (base <s, isos. triangle)
<DBA + <DBC = 180deg (adj. <s on st line)
<DBA + 130deg = 180deg
<DBA = 50 deg
k = 50 deg
m+k = <DBC (ext. < of triangle)
m + 50deg = 130deg
m = 80 deg

2009-12-28 19:17:04 補充：
ok la~~Hope can help you^^"""

參考: Hope can help you~~

👍 0 👎 0

用戶9112

2009-12-29 12:36 am

不要上該網,網站含9個病毒.

👍 0 👎 0

wing hang

2009-12-28 10:59 pm

your jpeg does not open

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