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Equations of Circles 圓方程
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.gmath.hk
New Resources
四邉形 (四年級) 教師版
異分母分數減法
兩組對邊相等和有直角的四邊形
球体的体积推导（优化版）
算柱 (兩位數)
Discover Resources
p04 fixed distance from a line
Tangent from an external point
瓜豆原理——动点跟随
学习计算器套件
y=asin(bx+theta)+c
Discover Topics
Trigonometry
Bar Chart or Bar Graph
Probability
Combinatorics
Confidence Interval