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固定周界,面積有何變化?
Author:
joshua
GeoGebra
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GeoGebra笔记功能体验课件
柱體建築師
【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
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銳角三角函數
塗色練習
Simultaneous Equations (Linear and quadratic)
参数曲线
生长的海螺
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Hyperbola
Planes
Subtraction
Prism
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