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Angle Sum in a Triangle
Author:
ksarnoff
,
Koo Wing Yan
Topic:
Angles
Angle Sum in a Triangle
GeoGebra
New Resources
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
【案例】圆柱体内放置一个大球六个小球
拼砌四邊形
兩位數除以一位數（一）
Discover Resources
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
學習活動二之二參數與圖形結構的關係
工具：PlaneText, PlaneArrow
Copy of 表示數線上的位置
旋轉線段
Discover Topics
Line Segment
Sphere
Parametric Curves
Geometric Distribution
Quadrilaterals