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二元一次方程式1
Author:
丁于涵
GeoGebra
New Resources
兩組對邊相等的四邊形
找出對稱軸
【案例】2013年安徽高考15题
画直线等分三角形的面积
三位數除以一位數（一）
Discover Resources
八芒星
Volume of pyramid from a cube
圆锥的侧面展开图3D动画的副本
手拉手模型
求切线方程(改进)
Discover Topics
Arithmetic Operations
Combinatorics
Tree Diagrams
Quadratic Functions
Conditional Probability