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Drawing quadrilaterals on the grid or the pinboard
Author:
Anthony OR 柯志明
GeoGebra
New Resources
球體建築師
四邉形 (四年級) 教師版
sanjiaohanshu
兩組對邊相等的四邊形
找出對稱軸
Discover Resources
四邊形的「等角分點」
旋轉動畫
現學現賣test
面積
S2 Angles Related to Rectilinear Figures
Discover Topics
Similar Triangles
Arithmetic
Statistics
Trigonometry
Coordinates