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三角形面積公式 1/2 bc sinA
Author:
羅驥韡 (Pegasus Roe)
Topic:
Area
GeoGebra
New Resources
三位數除以一位數（二）
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
四邉形 (四年級) 教師版
畫出對稱圖形
Discover Resources
吳老師幾何題
隨機迷宮
圓柱截痕
illusion 鏡射
两个经典不等式
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Cylinder
Mathematics
Trapezoid
Straight Lines
Right Triangles