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托勒密定理的應用
Author:
連琨銘
GeoGebra
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兩位數除以一位數（二）
算柱 (兩位數)
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
異分母分數減法
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「相似三角形」任务1
parabola
摩天輪
錯角練習
正方体的十一种展开图
Discover Topics
Pyramid
Cube
Cuboid
Mode
General Quadrilateral