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Quiz on Simplifying Ratios 比的化簡：測驗
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.gmath.hk
New Resources
畫出對稱圖形
近似值：有效數字
美國國旗 (Codex 版)
四邉形 (四年級) 教師版
第八周作业
Discover Resources
方格紙上畫菱形3
過圓內c點的弦中點軌跡
Football Puzzle - 直線盤球
對鄰邊之對
勝者即正義，可愛即正義~
Discover Topics
Vectors 2D (Two-Dimensional)
Intersection
Rhombus
Circle
Centroid or Barycenter