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圖B
Author:
whtong
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
異分母分數減法
球体的体积推导
四邉形 (四年級) 教師版
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美麗的剪紙
四則運算
欢度春节(灯笼)
angle sum of polygon
摺正三角形
Discover Topics
Mathematics
Congruence
Frequency Distribution
Boxplot
Fractions