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P4 多邊形周界01 測試
Author:
makkei
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
兩位數加法
兩位數除以一位數（二）
畫出對稱圖形
Discover Resources
Symmetric設計對稱圖案(兩條對稱軸)
觀察軌跡求面積
圓方程式
球體體積圖解
test
Discover Topics
Arithmetic Operations
Pyramid
Vectors
Similarity Transformation or Similarity
Inequalities