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平行四邊形面積一
Author:
youzhen shih
Topic:
Area
GeoGebra
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GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
柱體建築師
兩位數加法
三位數除以一位數（一）
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y=a(x-h)²+k
優良作品3
包絡線：拋物線
勒洛三角形任意點P軌跡
分数加法 Fraction Addition
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Random Experiments
Functions
Line Segment
Subtraction
Numbers