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Author:
liqiang liu
,
Steve Phelps
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三位數除以一位數(二)
兩組對邊相等和有直角的四邊形
球體建築師
兩位數除以一位數(一)
第八周作业
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Pole & Polar
Copy of 七巧板
圈柱(可調整內半徑、外半徑,柱高)
數學傳播39卷4期, 平面幾何公式思考
折扣 例3的副本
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Subtraction
Dilation
Combinatorics
Line Segment
Symmetry