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平行四邊形
Author:
涂老師
Topic:
Parallelogram
GeoGebra
New Resources
找出對稱軸
球体的体积推导（优化版）
四邉形 (四年級) 教師版
兩位數加法
兩組對邊相等和有直角的四邊形
Discover Resources
volleyball throughing
減法
假分數轉為帶分數
graph of functions
「相似三角形」任务3的副本
Discover Topics
Pyramid
Triangles
Boxplot
Geometric Transformations
Quadratic Functions