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congruent activity
Author:
lamanleung
GeoGebra
New Resources
盈利與虧蝕
圓周公式的應用
百分數及其應用
平行線的斜率
垂直線的斜率
Discover Resources
Trajectory of system: y'=sin(y)-y/2
樞紐問題
test
垂心
Copy of 釘點紙畫三角形