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Mathematics
初中
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想問

如圖、G、CD 為圖O的兩弦,其中OMON 分別為其弦心距,若CD=15 ON=6,OM=5,回答下列問題: 課 P107 2 (1)AB。 (2) 已知圆上有另一弦EF,且OM<EF的弦心距長度<ON,若EF的長度為實 數值,求EF。 10 M 18
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