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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
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兩組對邊相等和有直角的四邊形
判斷球體
拼砌四邊形
四邊形的特性
畫出對稱圖形
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vector1
减速传送带上的物体
工具：DimensionArrows
Copy of Introduction of pH
算盘
Discover Topics
Logic
Similar Triangles
Numbers
Standard Deviation
Median Value
