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圆锥曲线第二定义
Author:
冯伟冀
Topic:
Conic Sections
GeoGebra
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兩位數除以一位數（二）
兩位數除以一位數（一）
GeoGebra笔记功能体验课件
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
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龍騰4_1-1習6-2
偽國中數學幾何題
斯坦納-雷米歐司(Steiner-Lehmus)定理證明一
硬幣繞多邊形面積
時鐘
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Area
Quadratic Equations
Circle
Prism
Pyramid