close
標題:
properties of circles x1
發問:
In the figure, ∠BCD=100°, ∠ABD=70° and ∠ADB=x. Find x. *** don't use the reason "opp. ∠s, cyclic quad." 圖片參考：http://imgcld.yimg.com/8/n/HA00215765/o/701104160111113873427430.jpg
最佳解答:
Join AC ,ㄥACD = ㄥABD = 70° (ㄥS in the same segment)ㄥACB = 100° - ㄥACD = 100 - 70 = 30°x = ㄥACB = 30° (ㄥS in the same segment)
其他解答:
properties of circles x1
發問:
In the figure, ∠BCD=100°, ∠ABD=70° and ∠ADB=x. Find x. *** don't use the reason "opp. ∠s, cyclic quad." 圖片參考：http://imgcld.yimg.com/8/n/HA00215765/o/701104160111113873427430.jpg
最佳解答:
Join AC ,ㄥACD = ㄥABD = 70° (ㄥS in the same segment)ㄥACB = 100° - ㄥACD = 100 - 70 = 30°x = ㄥACB = 30° (ㄥS in the same segment)
其他解答:
此文章來自奇摩知識+如有不便請留言告知
文章標籤
全站熱搜
留言列表
