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光学在抛物线内的反射
Author:
雷风恒
GeoGebra
New Resources
第三周作业效果演示
龙形曲线-分形龙
活动三：应用性质
正方形雪花图案
双心四边形
Discover Resources
Reflectional Symmetry 反射對稱
tessellation design
觀察軌跡求面積
三角形外心的位置
角的介紹 | Introduction to Angles
Discover Topics
Piecewise Functions
LCM and GCD
Trigonometry
Isosceles Triangles
Upper and Lower Sum or Riemann Sum