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congruent triangles_provided by Mr Yeung Kar Chun
Author:
kidmancmw
GeoGebra
New Resources
直線的斜率：水平變化 & 鉛垂變化
平行線的判定
圓的切線方程
圓的基本性質
双心四边形
Discover Resources
百分數的應用
光源距離 Light Source Distance
ggb-fs-a1
黃金三角形
同底等高的三角形面积相等.许兴华数学
Discover Topics
Hypothesis Testing
Quadrilaterals
Pythagoras or Pythagorean Theorem
Logic
Circumcircle or Circumscribed Circle