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平行四邊形的高
Author:
鍾文欽
Topic:
Parallelogram
GeoGebra
New Resources
畫出對稱圖形
三位數除以一位數（一）
近似值：有效數字
算柱 (兩位數)
sanjiaohanshu
Discover Resources
海市蜃樓
方輪與方路
Angles in pyramid
認識角度
拋物線3--平行四邊形法
Discover Topics
Right Triangles
Cylinder
Kite
Cosine
Means