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Author:
te chin chen
隨便drag C,畫面會連動
GeoGebra
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Nikmati Keunggulan Di Bandar Judi Terpercaya
The Red Chair
從邊長辨認四邊形
畫三角形
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geometry applets
test
AM 2010 P2 Q7
X-maths Tree yey
Discover Topics
Trapezoid
Intersection
Translation
Constructions
Rhombus