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perimeter
Author:
cheng JJ
,
Tim Brzezinski
,
Steve Phelps
GeoGebra
GeoGebra
New Resources
三位數除以一位數（一）
柱體建築師
兩組對邊相等的四邊形
判斷球體
【案例】圆柱体内放置一个大球六个小球
Discover Resources
dabuhe
托勒密定理推廣到直線
盾牌(小動畫)
Locus (Parallel lines)
已知長方形周界和長求闊
Discover Topics
Tree Diagrams
Combinatorics
Functions
Geometric Transformations
Function Graph