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長方形面積
Author:
Pei-Yi Jhou
GeoGebra
New Resources
平行線的判定
百分數及其應用
正方形雪花图案
龙形曲线-分形龙2
直線的斜率：水平變化 & 鉛垂變化
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跑馬燈
Q2-3
俄羅斯方塊
DSE Circle-ACT01B Relationship between Centre and Chord
用平方差公式做因式分解
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Parallelogram
Inequalities
Straight Lines
Surface
Diagrams