hjyanghj – Resources – GeoGebra

eightnineten
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hjyanghj
Similar Triangle
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hjyanghj
8,9,10 pieces
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hjyanghj
保持比例
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hjyanghj
保持2:3:4
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hjyanghj
四邊形ADFE的面積是多少？
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hjyanghj
D 是垂足的條件不可少
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hjyanghj
FourSimilarRightTriangle
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hjyanghj