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test1
Author:
rongsuei
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球体的体积推导
兩位數除以一位數（一）
祖冲之的期望：内棋与外棋
直線的斜率
兩位數加法
Discover Resources
Sequence指令練習(包絡線：橢圓)
lms2702
rotational symmetry_1
三角形中線定理求最小值
Copy of 周界
Discover Topics
Arithmetic Operations
Planes
Perimeter
LCM and GCD
Bar Chart or Bar Graph