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劉虹圻 旁心
Author:
呂麗珠
GeoGebra
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錐體建築師
小数 的副本
畫出對稱圖形
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
Discover Resources
quadrilaterals 5
Twist Bottle
Geometry : Basic Elements (幾何： 基本元素)
ghk106a11 三角形面積比
旋轉正方形
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Sequences and Series
Random Variables
Orthocenter
Linear Programming or Linear Optimization
Polynomial Functions