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平行四邊形面積教材三
Author:
kaisze930
Topic:
Parallelogram
平行四邊形面積教材三
GeoGebra
New Resources
画直线等分三角形的面积
找出對稱軸
算柱 (兩位數)
兩位數除以一位數（二）
四邉形 (四年級) 教師版
Discover Resources
西姆松定理推廣(西姆松圓)
Triangles with the same height
P.8.20_1
密鋪8
线面g
Discover Topics
Pythagoras or Pythagorean Theorem
Diagrams
Rational Numbers
Curve Sketching
Root