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切線段等長
Author:
謝易達
可移動P點，檢查切線段是否等長
GeoGebra
New Resources
畫出對稱圖形
兩位數加法
異分母分數減法
錐體建築師
四邉形 (四年級) 教師版
Discover Resources
Quiz on Solving Quadratic Inequalities 解二次不等式：測驗 (v2018)
Angles in a Circle:Property 2
雙曲線軌跡
翰林數學_2下_CH3-2_ASA作圖
常见四边形是否是双心四边形
Discover Topics
Frequency Distribution
Trapezoid
Polynomial Functions
Prism
Linear Equations