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Angles associated with Parallel Lines 平行線上的角
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.gmath.hk
New Resources
科氏力 (Coriolis Force)
平行線的判定
常见四边形是否是双心四边形
圓的切線方程
第八周作业3
Discover Resources
gyzel 橢圓的反射
练习及小结
Copy of Finding the H.C.F. and the L.C.M.
探究判定全等三角形的条件（ SSA? & HL！）
展開圓面積 (講義版)的副本
Discover Topics
Quadratic Functions
Diagrams
Normal Distribution
Difference and Slope
Pyramid