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图中的三角形面积何时最小？（许兴华数学）
Author:
许兴华数学
Topic:
Quadratic Functions
GeoGebra
New Resources
判斷球體
四邉形 (四年級) 教師版
找出對稱軸
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
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三個外切圓
倒數計時
GGB8
中考专题-等腰三角形与旋转-求角度专项-D-1
变化的三角形的垂心.许兴华数学
Discover Topics
Area
Power Functions
Straight Lines
Difference and Slope
Piecewise Functions