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2.5
-ttt1010-
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11/28/2025 postreply
18:17:14
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正確!有步驟/解答嗎?
-Yeli9008-
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11/28/2025 postreply
18:23:29
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可以算出。 也可以畫輔助線證明兩小三角形相似
-ttt1010-
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11/28/2025 postreply
18:48:24
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詳細一點
-ttt1010-
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11/28/2025 postreply
19:06:21
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這個方法最簡單:-)
-Jessy99-
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11/28/2025 postreply
19:17:20
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腦裏列方程算出2.5
-3-D-
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11/28/2025 postreply
18:29:08
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2.5
-神氣活現-
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11/28/2025 postreply
18:45:08
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GE is longer than GF !
-Yeli9008-
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11/28/2025 postreply
18:49:37
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方程列對了,剛才解錯了,現在對了
-神氣活現-
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11/28/2025 postreply
18:54:40
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Similar triangles EAG ~ GBC (length ratio 1:2)
-Yeli9008-
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11/28/2025 postreply
19:01:17
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(2+y)^2-(2-y)^2=4
-3-D-
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11/28/2025 postreply
18:52:38
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