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Opp angles cyclic quad
Author:
Big Lee
GeoGebra
New Resources
畫出對稱圖形
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
直角坐標平面上的旋轉變換
Discover Resources
精神堡壘
菱形有甚麼特性？
Roger Test Draw
Orthocentre
二次涵数的图象y=ax^2+b的副本
Discover Topics
Hypergeometric Distribution
Trigonometric Functions
Algebra
Exponential Functions
Line Segment