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Quiz on Finding Unknowns in Similar Rectangles 求相似長方形中的未知量：測驗
Author:
Alex CHIK
Topic:
Rectangle
GeoGebra
gMath 互動數學教室
http://www.gmath.hk
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Tracing r = 2 cos(θ)
အခြေခံ data အခေါ်အဝေါ်များ
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