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任務2
Author:
gklwong
Topic:
Triangles
GeoGebra
New Resources
兩組對邊相等的四邊形
找出對稱軸
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
第八周作业
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機率統計
百分數（小學）：折扣 / 賺賠（HTML5 版）
waaachen
test
GGB5
Discover Topics
Curve Sketching
Cone
Hypothesis Testing
Rotation
Statistical Characteristics