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点的轨迹
Author:
cmcmcmcm
GeoGebra
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兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
錐體建築師
兩位數除以一位數（一）
找出對稱軸
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由拉線80303林心怡
終點軌跡
直線的投影量
國旗
dingding_test
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Rotation
Differential Calculus
Square
Root
Optimization Problems