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完全图及其变形
Author:
卢德洪
Topic:
Rotation
,
Geometric Transformations
GeoGebra
New Resources
画直线等分三角形的面积
四邊形的特性
拼砌四邊形
兩位數加法
三位數除以一位數（一）
Discover Resources
Probability(概率）
Magnitude of cosine
線性代數
認識分數
最短路径
Discover Topics
Boxplot
Differential Equation
Line Segment
Quadratic Functions
Polygons