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兩圓外公切線
Author:
郭逸民
GeoGebra
New Resources
兩位數除以一位數（一）
兩組對邊相等的四邊形
第八周作业
找出對稱軸
兩位數除以一位數（二）
Discover Resources
中點軌跡(動點在兩圓上)
MeArm機構模擬V.2
数学教学新帮手
虎牙
漂亮的摇摆曲线
Discover Topics
Normal Distribution
Algebra
Random Experiments
Tree Diagrams
Isosceles Triangles