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應用圓周公式：題 5
Author:
肖昆明
GeoGebra
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平行線的判定
第八周作业2
常见四边形是否是双心四边形
盈利與虧蝕
科氏力 (Coriolis Force)
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Homework5
較複雜的周界問題(二)
BkD_act15_05c
PIAY
[洋葱] 与相似有关的定值问题-Q2
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Sine
Line Segment
Geometric Transformations
Histogram
Circle