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Angles sum of polygon(多邊形內角和)
Author:
chisunch1
GeoGebra
New Resources
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
球体的体积推导
三位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
Discover Resources
平行四邊形的面積教材一
正方形和長方形有甚麼特性？
mario
猴子攀樹
Sequence指令作圖-3
Discover Topics
Square
Functions
Polygons
Scalene Triangles
Normal Distribution