問2題數學題~~

2007-03-14 1:00 am
http://i137.photobucket.com/albums/q209/ling8383/aaabbb.jpg

find the unkowns in the following

請寫清楚ed(int,alt,corr)

回答 (1)

2007-03-14 2:04 am
✔ 最佳答案
<係角
a)加1條線(叫O)係n係平行ST同PQ

2007-03-13 18:07:43 補充:
a)加1條線(叫O)係n係平行ST同PQ角QRO=55度(alt 角s,OR//QP)角SRO=180度-140度(int 角,ST//OR)=40度n=55度+40度=95度b)加1條線(叫O)係p係平行AB同ED角BCO=180度-130度(int 角,AB//OC)=50度角DCO=180度-120度(int 角,OC//ED)=60度P=60度+50度=110度


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