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正弦定理
Author:
yuchengda
GeoGebra
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兩位數除以一位數（一）
畫出對稱圖形
兩組對邊相等的四邊形
【案例】2013年安徽高考15题
拼砌四邊形
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Trigonometry
繪製一次函數圖形(隨機出題)
判斷球體 2
BkD_act15_03c
這是什麼角？的副本
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Probability
Rational Numbers
Logarithm
Diagrams
Interest Calculation