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厘米和毫米
Author:
Tse Sir
GeoGebra
New Resources
四邊形的特性
第八周作业
找出對稱軸
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
Discover Resources
三角形的重心
Mearm2
定周长的正多边形面积变化规律
向量的加法法则
圆面积和周长展开示意图
Discover Topics
Rectangle
Straight Lines
Translation
Tree Diagrams
Piecewise Functions