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Right Triangles in a Circle 圓內的直角三角形
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
找出對稱軸
sanjiaohanshu
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
拼砌四邊形
Discover Resources
對數的遞增或遞減(底數小於1)
regular tetrahedron in a cube
定理7.1&7.2
分年細目：7-a-12 能在直角坐標平面上描繪常數函數及一次函數的圖形。
正多角柱(可輸入底面邊數)
Discover Topics
Triangles
Cone
Stochastic Process or Random Process
Functions
Power Functions