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Proof1 彭凱揚
Author:
郭亮偉
GeoGebra
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兩組對邊相等的四邊形
三位數除以一位數(一)
拼砌四邊形
柱體建築師
四邉形 (四年級) 教師版
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圓定理2.1
百分數(小學):折扣 / 賺賠(Java 版)
平行四邊形
ghseh 二次函數描點法左右平移-5
異分母分數減法
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Algebra
Triangles
Bar Chart or Bar Graph
Rhombus
Isosceles Triangles