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銳角三角：sin, cos
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
三位數除以一位數（一）
第八周作业
兩位數除以一位數（一）
算柱 (兩位數)
拼砌四邊形
Discover Resources
分數除法 1：a ÷ b（均分）
內公切線段長求法
Bearings
比較利益
探究
Discover Topics
Cuboid
Ellipse
Addition
Vectors
Curve Sketching