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u5ok
Author:
vitalja
GeoGebra
New Resources
z`]]
探究長方形對角線上的正方形數目
Balls in an Urn
Golden Rectangles and Golden Spirals
bewijs stelling van Pythagoras
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parametric
GeradeUndSenkrechte
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การบวกจำนวนเต็ม
angle sum of triangle