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梯形转化平行四边形
Author:
吕玉雷
GeoGebra
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三角函数 的副本
中华人民共和国国旗
第八周作业3
第八周作业1
龙形曲线-分形龙
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橢圓尺規作圖Ex01
例題6
S3 Trigonometry
廣義角的副本
探究平行四邊形面積
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Polynomial Functions
Logarithmic Functions
Polygons
Trapezoid
Linear Programming or Linear Optimization