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[中考] 2017 北京-26-半圆内的直角三角形
Author:
洋葱教研
GeoGebra
New Resources
直角坐標平面上的旋轉變換
【案例】圆柱体内放置一个大球六个小球
拼砌四邊形
兩位數除以一位數（二）
判斷球體
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題四
正多边形构造
Pappus Chain
極座標雷達
小六 平均數 (供教師講解用)
Discover Topics
Differential Equation
Means
Pyramid
Quadrilaterals
Symmetry
