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10.如圖,A、B、C均在圓O上,且 下分別是 的弦心距,若∠A>∠B>∠C,則 可下的大小關係何者正確? (A) (B) (C) (D)
問題詳情
10.如圖,A、B、C均在圓O上,且
下分別是
的弦心距,若∠A>∠B>∠C,則
可下的大小關係何者正確?
(A)
(B)
(C)
(D)
參考答案
用户評論
【
魏嘉均
】評論
由大角對大邊可知BC線段>AC線段>AB線段。圓內的弦越長弦心距越短。所以
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9.如圖,P為圓O内部一點,若 、圓O半徑長為20,則圓O内趟P點的最短弦長度為多少? (A)16 (B)24 (C)32 (D)40
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