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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
異分母分數減法
畫出對稱圖形
球体的体积推导
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等的四邊形
Discover Resources
範例：丟骰子
切3塊拼成正方形
雙曲幾何
平移法（四）
橢圓規Ellipsograph of Parallelogram
Discover Topics
Arithmetic Operations
Fractal Geometry
Inequalities
Step Functions
Mode