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congruent (ASA)
Author:
Ricky Chan
GeoGebra
New Resources
圓周公式的應用
【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
祖冲之的期望：内棋与外棋
兩位數除以一位數（二）
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畢氏定理動態證明(歐基里得，平形四邊形等面積2，應用時間參數跳躍函數配合向量)
gjh-h01-01 畢氏數三角形
分點公式：P = (?)A + (?)B + (?)C
扇形弧長公式2
駐波
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Quadrilaterals
Arithmetic Operations
Calculus
Difference and Slope
Trigonometric Functions