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三角形的垂心
Author:
大園數學
垂心是三個高的交點
GeoGebra
New Resources
畫出對稱圖形
兩組對邊相等和有直角的四邊形
兩位數除以一位數(一)
兩位數除以一位數(二)
四邉形 (四年級) 教師版
Discover Resources
畫圖.....
Sequence指令練習(二維4)
猜猜平均數(限時版)
拼數咭
翰林數學_2下_CH3-2_SSA
Discover Topics
Congruence
Conditional Probability
Matrices
Upper and Lower Sum or Riemann Sum
Cylinder