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廣義三角：sin, cos
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
三位數除以一位數（二）
異分母分數減法
【案例】2018年全国1卷理科12题
第八周作业
兩組對邊相等和有直角的四邊形
Discover Resources
乘法公式2
講義P80 剪出現對稱圖形.ggb
pictures
Proof of Pythagorean Theorem with Shearing
襯墊
Discover Topics
Expected Value
Addition
Incircle or Inscribed Circle
Histogram
Rotation