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rectangle
作者:
themelinalelekis
主題:
矩形
GeoGebra
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Graphical solution of ax² + bx + c = k
Untitled
Drunk Parabola
Quiz: Vertical Angles and Linear Pairs
bewijs stelling van Pythagoras
探索資源
Was Pythagoras Wrong? - Related Heresies
Polygons 181819
Hot'n'Cold
construction of an isosceles triangle
Crossing a river
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