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tool3
Author:
陳禹妗
GeoGebra
New Resources
兩組對邊相等的四邊形
三位數除以一位數（二）
找出對稱軸
兩位數除以一位數（一）
兩位數除以一位數（二）
Discover Resources
五邊形與三角形等積
沈暐珊 橢圓反射
垂心與垂線
test
三角形
Discover Topics
Confidence Interval
Intersection
Differential Calculus
Trapezoid
Linear Programming or Linear Optimization