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美图欣赏-线绳艺术
Author:
卢德洪
Topic:
Constructions
,
Rotation
GeoGebra
New Resources
四邊形的特性
兩組對邊相等和有直角的四邊形
兩位數加法
兩位數除以一位數（一）
拼砌四邊形
Discover Resources
Proof of Pythagoras Theorem
截面法體積(2)
三角函數 角度變換(個人認為直覺上較好理解的)(手機使用教材)
椭圆的定义
勒洛四面体（拼接法）
Discover Topics
Fractal Geometry
Unit Circle
LCM and GCD
Parabola
Pythagoras or Pythagorean Theorem