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放缩尺
Author:
萧若茂
放缩尺
GeoGebra
New Resources
探究三角形的全等條件
第八周作业
祖冲之的期望：内棋与外棋
三位數除以一位數（二）
垂直線的斜率
Discover Resources
記錄最大值
優良作品6
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面積題 E
賺賠：例1的副本
Discover Topics
Arithmetic Operations
Rotation
Perimeter
Sequences and Series
Rhombus