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S408 Penrose 階梯
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学用数学
GeoGebra
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GeoGebra笔记功能体验课件
球體建築師
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
第八周作业
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底圖為圓，截面為半圓
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初犯九點圓
優良作品1
根據百分率找數量（二）: 例4的副本
Discover Topics
Rational Numbers
Difference and Slope
Mode
Congruence
Intersection