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圓內接四邊形任務二：提示一
Author:
Stanley Mak
GeoGebra
New Resources
Fibonacci Clock
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
找出對稱軸
Discover Resources
Quiz on Solving One-step Linear Equations (1) | 解「一步」一次方程：測驗(1)
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
五圓相切
classifying triangles
三角形的外心
Discover Topics
Polynomial Functions
Conditional Probability
Difference and Slope
Tree Diagrams
Translation