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繪製平行四邊形
Author:
曾耀輝
GeoGebra
New Resources
三位數除以一位數（一）
三位數除以一位數（二）
兩位數除以一位數（一）
漂亮的摇摆曲线
平行線的斜率
Discover Resources
一般變換
最短距離
正切函數值的變化
sine graph (reduce to 1/2 and then translate leftward by 15 degree)
祖暅之《綴術》：「緣冪勢既同，則積不容異。」
Discover Topics
Standard Deviation
Rotation
Bar Chart or Bar Graph
Hypergeometric Distribution
Piecewise Functions