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An Important Fact
Author:
Ku, Yin Bon (Albert)
Can you find out how the lengths AC, CB and CD are related? You can drag the points A, B and C freely to see the changes in those lengths.
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分數化百分數:練習
立体几何-公理3及推论
Adding Decimal Numbers and Shortest Path Strategies
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Oceans of Knowledge
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copy a segment
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同分母分數加法
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