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两角和的正弦公式几何证明(改进)
Author:
桃篮翁
两角和的正弦公式几何证明(改进)
GeoGebra
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异形操场
常见四边形是否是双心四边形
斐波那契螺旋弧线(表格法-可动态调节)
第八周作业2
双心四边形
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分數乘法1
gitfh 複合圖形-正四角柱中挖圓柱
earth
畫等腰直角三角形
橢圓1--同心圓法
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Complex Numbers
Linear Programming or Linear Optimization
Optimization Problems
Congruence