請依下圖列出所有步驟及理據
http://i246.photobucket.com/albums/gg119/FFS12/ABC23.jpg
英文四邊形數學題1(15分)
2009-02-02 3:26 am
回答 (1)
2009-02-02 3:56 am
✔ 最佳答案
1.q = ∠A (opp. ∠s of //gram)
q = 110 degrees
AB//DC (opp. sides of //gram)
p + 110 degrees = 180 degrees (int. ∠s, AB//DC)
p = 180 degrees - 110 degrees
p = 70 degrees
2.
IL//JK (opp. sides of //gram)
3y - 20 degrees + y = 180 degrees (int. ∠s, IL//JK)
4y = 180 degrees + 20 degrees
y = 200 degrees / 4
y = 50 degrees
參考: me
收錄日期: 2021-04-23 20:18:05
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090201000051KK01865