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Quiz on Trigonometric Ratios 辨認三角比：測驗
Author:
Alex CHIK
Topic:
Trigonometry
GeoGebra
gMath 互動數學教室
http://www.gmath.hk
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兩位數除以一位數（一）
直角坐標平面上的旋轉變換
拼砌四邊形
GeoGebra笔记功能体验课件
球體建築師
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模擬「分頁」效果
分數加減
平移
triangle
面積
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Straight Lines
General Quadrilateral
Subtraction
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