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曲边梯形的面积
Forfatter
Renxiaoli
通过三种曲边梯形面积计算方法的比较，能理解以直代曲和定积分的概念
GeoGebra
Nye Materialer
Colouring of Venn Diagram
bewijs stelling van Pythagoras
အခြေခံ data အခေါ်အဝေါ်များ
Special Solid Trace
दुई-ओटा समुहको संयोजन (Union of two sets)
Opdag Ressourcer
This is a test of Blue Blobs
commando functie
Translation Screensaver
boundaries & enclosures
Udforsk emner
Parabler
Grafskitsering
Retvinklede trekanter
Cirkel
Trapez