F4 Maths (circle)

👨🏻‍🏫 學術台數學

2012-08-27 5:53 am

http://upload.lsforum.net/users/public/h47987circlex107.jpg

find x and y (with steps please!)

回答 (1)

2012-08-27 7:11 am

✔ 最佳答案

圖片參考：http://i1096.photobucket.com/albums/g340/pingshek/2012-08-26.png

http://i1096.photobucket.com/albums/g340/pingshek/2012-08-26.png

2012-08-26 23:13:46 補充：
(c + x) + (b + y) + 30° = 180° (∠ sum of Δ)

參考: miraco, miraco

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