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完全图及其变形
Author:
卢德洪
Topic:
Rotation
,
Geometric Transformations
GeoGebra
New Resources
球體建築師
兩組對邊相等的四邊形
異分母分數減法
算柱 (兩位數)
四邊形的特性
Discover Resources
三角形
zuiduan
向量合成
结果10以内加法
Quiz on Addition and Subtraction of Directed Numbers (1)
Discover Topics
Mode
Plane Figures or Shapes
Geometry
Histogram
Inequalities