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诱导公式五(90°+α)
Author:
桃篮翁
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
兩位數加法
三位數除以一位數(二)
四邊形的特性
算柱 (兩位數)
Discover Resources
威力彩開獎機
locus
P3構作放大圖形
三角形面積
抛豆实验
Discover Topics
Complex Numbers
Solids or 3D Shapes
Surface
Exponent
Upper and Lower Sum or Riemann Sum