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任务9：外凸的正方形
Author:
陈丽婷
GeoGebra
New Resources
异形操场
双心四边形
圓的切線方程
第八周作业1
直線的斜率：水平變化 & 鉛垂變化
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Primary Mathematics
中線定理(阿波羅尼奧斯)定理推廣二：向四邊形推廣
題四
題4
圓心角圓周角弦切角
Discover Topics
Arithmetic Operations
Scalene Triangles
Rotation
Sine
Perimeter