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梯形堆垛
Author:
施奕瑄
GeoGebra
New Resources
算柱 (兩位數)
四邉形 (四年級) 教師版
Fibonacci Clock
兩組對邊相等的四邊形
近似值：有效數字
Discover Resources
Geogebragoodone
Copy of 七巧板
平行四邊形柱算體積(可以切開)
Angle between line & plane
銳角三角：sin, cos
Discover Topics
Histogram
Functions
Standard Deviation
Integers
Continuity