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Perimeter
Author:
Ting Chui Yee
,
Anthony OR 柯志明
,
Angela Yan
GeoGebra
New Resources
四邉形 (四年級) 教師版
拼砌四邊形
球体的体积推导（优化版）
兩組對邊相等的四邊形
柱體建築師
Discover Resources
指數函數圖形(底互為倒數)
量角器
從長方形的「周界」找回它的「長」和「闊」
Tangent from an external point
热带风暴storm
Discover Topics
Step Functions
Optimization Problems
Complex Numbers
Numbers
Area