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ptcc trigo level 2
Author:
Cheung Wing Chuen
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
拼砌四邊形
異分母分數減法
三位數除以一位數（一）
Discover Resources
clock
三角形外心
abcd
中位线的副本
S0G4L2 到两点距离的运算为定值
Discover Topics
Conditional Probability
Bar Chart or Bar Graph
Reflection
Indefinite Integral
Scatter Plot