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Author:
Lin Ching Chieh
GeoGebra
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兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
球体的体积推导
找出對稱軸
Discover Resources
Locus
Task 3 Isosceles Triangle
等距共軛點(isotomic conjugate point)
圓形移動面積
長方形的對稱軸
Discover Topics
Exponential Functions
Coordinates
Matrices
Pythagoras or Pythagorean Theorem
Integers