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多边形旋
Author:
赵林
GeoGebra
New Resources
Earth with coastline
兩組對邊相等和有直角的四邊形
拼砌四邊形
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
Discover Resources
圓周角的度數
Symmetric設計對稱圖案(兩條對稱軸)
平行4
Text sequence
不等式組
Discover Topics
Vectors 2D (Two-Dimensional)
Logic
Rational Numbers
Arithmetic Mean
Sine